Forem: Gaetan Gasoline

Keyboard Events and User Interactions

Gaetan Gasoline — Thu, 09 Apr 2026 13:34:09 +0000

Keyboard Events to create a seamless user experience

The Angular layer allows the developer to manage keyboard events very precisely. The ScheduleJS events API provides various event methods like setOnActivityDragOngoing to register callbacks fired during specific, like for example a drag and drop. During these operations, you can easily access the underlying events and react to keyboard inputs such as modifiers (like Ctrl, Shift) or direct keypresses.

In the following example, the user makes use of his Shift key to perform a multidirectional drag and drop action, and then uses the Ctrl key to perform a horizontal drag and drop:

Compatibility with Event managing tools

You can connect either modern Angular state management tools like RxJS and such and/or native JS event listeners to trigger the internal ScheduleJS API and act on the graphics in many ways. If you want to design advanced scenarios for your Keyboard events, just couple your usual event handlers with methods from the GanttGraphics API :

graphics.redraw() to trigger programatic graphics re-rendering
graphics.setEditModeCallback(Activity, LayoutType, () => ...)
or any elements of your graphics that you would like to impact with Keyboard events

Accessibility within internal elements

When using ScheduleJS listeners, the related TypeScript event is stored in the ActivityEvent. TypeScript stores properties like ctrlKey, altKey, shiftKey, and metaKey in the MouseEvent to indicate if keyboard keys are pressed during the event.

Combining multiple input methods

Modern web apps are accessible from many different devices, having their specificities and dedicated input methods. It is a challenge to design the perfect UX for every device. The richness of the ScheduleJS API is able to react to all kind of input methods to further increase flexibility and adoption. When designing your interactions, you can create a dedicated experience for all TypeScript events that might happen in the browser :

PointerEvents
TouchEvents
MouseEvents
KeyboardEvents
WheelEvents
And your custom events

Key Combinations for Actions

All row interactions can be managed using dedicated ScheduleJS event handlers. Our TypeScript layers holds the native event.

Here is some examples of actions that can be created with these :

Create a new activity ALT+LMB
Add a business specific interaction with ALT+RMB
Modify the drag and drop mode
Shortcuts for graphic management
Data modification
And many more…

ScheduleJS

Tree Table Customization

Gaetan Gasoline — Mon, 30 Mar 2026 09:02:55 +0000

The ScheduleJS API

ScheduleJS offers three components to create your own tree table.

<schedule-info-column-cells-left-pin-wrapper>
<schedule-info-column-header-cell>
<schedule-info-column-row-cell>

The two cell components (2 and 3) are made to wrap your custom header and row cells while the left pin wrapper (1) offers the possibility to freeze a column on the leftmost part of the tree table.

On the example above, the Activity ID column has been frozen with the left-pin-wrapper while other columns are some custom Angular components wrapped in the ScheduleJS row-cell and header-cell component wrappers.

Multiple Levels of Children Rows

ScheduleJS has no implicit limit to the levels of children rows. Every row can be a parent to some child rows. The goal is to let you create a tailored user experience maximising readability and interaction capabilities.

Tree Table Selection

Since FlexGanttFX is based on JavaFX and ScheduleJS is based on Angular, the FlexGanttFX getTreeTable API is not implemented in ScheduleJS. To handle resource selection in the tree table and overall application state, use an Angular state service.

Cell Factories

You can adjust alignment, graphics, and style of text in tree table cells using your regular Angular workflow. The header and row cell wrappers will provide the actual cell data using a TreeNodeContext object, storing row information such as:

expanded state (are child rows shown)
leaf state (are there child rows)
level (parent depth)
parent (parent row data)
value (actual row data)

ScheduleJS

Building custom Tree Tables in ScheduleJS

Gaetan Gasoline — Thu, 05 Feb 2026 13:58:51 +0000

Setting an Externally Configured Tree Table

ScheduleJS offers a dedicated API for designing custom tree tables using two key components:

schedule-info-column-header-cell
schedule-info-column-row-cell

Configuring the Tree Table layout

The tree table layout is purely made with HTML, CSS, and TypeScript using our Angular header cells and row cells components. These components are code wrappers, so you can populate these cells with virtually anything.

Custom components built with the info column API can feature:

Pinned columns, using schedule-info-column-cells-left-pin-wrapper
Communication with the charts using the ScheduleJS internal API
Listening to and emitting any event

Dynamic table headers

Table headers are resizable by default and can be built to directly interact with the graphics. A few examples of header features can be:

Additional column information
Sorting based on column information
Filtering with user input

A frequently asked question

Question: Is it possible to replace the default tree table with a custom component (CoreListComponent) that works like the FlexGanttFX table (bound to list view with row expansion) but with additional functionalities?

Answer: Yes. Using ScheduleJS 1.4, if you want table rows and vertical scrolling synchronized with the graphics, the recommended solution is to build your tree table component using the tree table API with:

schedule-info-column-header-cell to build your header cells templates
schedule-info-column-row-cell to build your row cells templates

Link to the article

TOP 6: JavaScript Gantt & Task Scheduling Libraries in 2026

Gaetan Gasoline — Mon, 02 Feb 2026 15:19:10 +0000

Task scheduling and Gantt charts are essential components of modern project management and resource planning applications. A Gantt chart provides visual representation of tasks, timelines, dependencies, and resource allocation, while task scheduling handles the underlying logic of when and how jobs execute. Together, they form the backbone of any serious scheduling web application.

JavaScript has become the dominant language for implementing scheduling solutions across both frontend and backend environments. On the frontend, developers rely on JS Gantt libraries to build interactive web calendar JavaScript interfaces and planning tools. On the backend, Node.js powers backend scheduling JavaScript solutions ranging from simple cron alternative JavaScript implementations to enterprise-grade job scheduler JavaScript systems.

Why JavaScript Dominates Scheduling

The reasons JavaScript leads in scheduling implementations are compelling.

Modern web applications require real-time, interactive interfaces that respond instantly to user actions. A scheduling web application built with JavaScript delivers drag-and-drop task management, live updates, and responsive designs across all devices. Whether building a time management web app or an enterprise planning system, JavaScript provides the interactivity and performance users demand.

For backend scheduling JavaScript requirements, Node.js offers event-driven architecture perfectly suited for handling scheduled tasks JavaScript workflows. The npm ecosystem contains hundreds of npm scheduler packages, from lightweight utilities to comprehensive job queuing systems capable of processing millions of tasks.

Common Scheduling Use Cases

Before examining specific libraries, understanding the landscape helps match solutions to requirements:

Visual Project Management: Building Gantt frameworks for project tracking, resource allocation, and timeline visualization. These web scheduling tools coordinate complex projects with multiple dependencies and resources.

Enterprise Resource Planning: Creating applications for manufacturing execution systems, production scheduling, and workforce management where thousands of resources must be coordinated efficiently.

Task Automation: Implementing JavaScript cron functionality to automate tasks with JavaScript, database backups, report generation, notification systems, and data synchronization.

Event Scheduling: Building online scheduling JavaScript applications for appointments, reservations, and calendar management.

Job Queuing: Managing background jobs in distributed systems requiring reliable queuing, prioritization, and processing.

With these use cases in mind, let's examine the top six libraries for 2026.

1: ScheduleJS

Category: Enterprise Gantt Chart & Resource Scheduling
Developer: AISO SA
License: Commercial
Website: schedulejs.com

ScheduleJS stands as the most flexible and modern solution for building enterprise-grade scheduling applications. Developed by AISO SA, ScheduleJS represents over 20 years of evolution through the DJT → FlexGantt → FlexGanttFX library suite, now brought to the web as a powerful JavaScript Gantt framework.

Overview

While most Gantt libraries rely on HTML/DOM-based rendering that struggles with large datasets, ScheduleJS uses canvas-based rendering technology. This architectural decision eliminates DOM-related bottlenecks entirely, enabling smooth operation with hundreds of thousands of activities and resources, performance levels that HTML-based competitors simply cannot match.

Core Features

Canvas-Based High Performance: ScheduleJS renders directly to HTML Canvas, bypassing DOM limitations. The library implements binary tree data structures for lightning-fast activity lookups, enabling smooth navigation through millions of data points. Real-world deployments handle 300,000+ resources and 3,500,000+ reservations without performance degradation.

Pixel-Perfect Customization: Every visual element can be customized at the pixel level through pluggable renderers. Activity appearance, interactions, tooltips, and behaviors are fully configurable through a clean API inherited from the proven FlexGanttFX codebase.

Multiple Layout Types: ScheduleJS supports three distinct layout styles—standard Gantt bars, chart/histogram views, and a unique agenda layout displaying activities similar to calendar views. Layouts can be combined within a single application for comprehensive data visualization.

Advanced Resource Management: Built for complex resource allocation scenarios, ScheduleJS handles dependencies, constraints, milestones, and multi-resource assignments. The framework powers ERP systems, manufacturing execution systems, and production planning applications where resource coordination is critical.

Real-Time Interactivity: Full drag-and-drop support for rescheduling activities, changing durations, and moving items between resources. Two-way data binding ensures changes reflect instantly across the application. The rich callback system provides access to all canvas data for building custom interactions and context menus.

Framework Integration: While optimized for Angular with specialized utilities, directives, and services, ScheduleJS integrates smoothly with any backend or API as a framework-agnostic solution.

Example Architecture

// ScheduleJS follows an object-oriented, class-based architecture
readonly gantt: GanttChart<Resource> = new GanttChart<Resource>(new Resource("ROOT"));

public initialize(): void {
  const layer: Layer = new Layer("Activities");
  this.gantt.getLayers().push(layer);
  this.gantt.addRows(...this.loadResourceData(layer));

  const timeline = this.gantt.getTimeline();
  timeline.showTemporalUnit(ChronoUnit.DAYS, 50);

  const graphics = this.gantt.getGraphics();
  graphics.setActivityRenderer(
    Activity, 
    GanttLayout, 
    new ActivityBarRenderer(graphics, "Activity Renderer")
  );
  graphics.showEarliestActivities();
}

// Custom renderers provide complete control over visualization
export class CustomActivityRenderer extends ActivityBarRenderer<Activity, Row> {
  protected drawActivity(
    activityRef: ActivityRef<Activity>,
    position: ViewPosition,
    ctx: CanvasRenderingContext2D,
    x: number, y: number, w: number, h: number,
    selected: boolean, hover: boolean, highlighted: boolean, pressed: boolean
  ): ActivityBounds {
    // Full canvas API access for pixel-perfect rendering
    this._drawCustomActivity(ctx, activityRef, x, y, w, h);
    return new ActivityBounds(activityRef, x, y, w, h);
  }
}

Real-World Deployments

ScheduleJS powers mission-critical applications at major organizations. Eurovision Services migrated their broadcast scheduling system—handling the distribution planning for 112 member organizations across 56 countries, from JavaFX to ScheduleJS. The migration of approximately 400,000 lines of code completed in just 3 months while maintaining the existing interface and improving performance.

The library serves industries including broadcasting, manufacturing, logistics, and enterprise resource planning where scheduling precision and scalability are non-negotiable requirements.

Strengths

The canvas-based rendering architecture provides unmatched performance for large-scale scheduling applications. The 20+ year lineage through FlexGantt ensures a mature, battle-tested API. Pixel-level customization means the library adapts to any visual requirement rather than forcing applications into predefined templates.

For teams building scheduling web applications that must handle enterprise-scale data volumes while providing responsive, interactive user experiences, ScheduleJS delivers capabilities other JavaScript Gantt libraries cannot match.

Limitations

ScheduleJS is a commercial product requiring license purchase, positioning it for professional and enterprise applications rather than hobby projects. The powerful API has a steeper learning curve than simpler alternatives—this is a comprehensive framework, not a drop-in component.

AISO provides professional support, training, and consulting services to help teams maximize their investment, including migration assistance for organizations moving from FlexGanttFX or other platforms.

Best For

Enterprise scheduling applications: Manufacturing execution systems, production planning, ERP modules, and resource management platforms.

High-volume data visualization: Applications handling thousands of resources and millions of activities where performance cannot be compromised.

Complex planning tools: Scenarios requiring advanced resource management, dependency handling, and pixel-perfect custom visualizations.

2: DHTMLX Gantt

Category: Gantt Chart Visualization
License: GPL v2 (Standard) / Commercial (PRO)
Website: dhtmlx.com

DHTMLX Gantt is a mature, feature-rich Gantt framework that has served the JavaScript community for over a decade. It offers comprehensive functionality through both an open-source Standard edition and a commercial PRO edition with advanced capabilities.

Overview

DHTMLX Gantt uses HTML-based rendering, providing a familiar development experience for web developers. The library includes extensive features for project management visualization, making it a popular choice for applications with moderate data volumes.

Core Features

Complete Task Management: Create, edit, and delete tasks with drag-and-drop support. Resize task bars, reschedule activities, and draw dependency lines between tasks.

Multiple Dependency Types: Support for finish-to-start, start-to-start, finish-to-finish, and start-to-finish relationships with visual connector lines.

Export Capabilities: Export to PDF, PNG, Excel, iCal, MS Project, and Primavera P6 formats.

Theming: Eight predefined skins including Material, Dark, and high-contrast themes with CSS variable customization.

Smart Rendering: Virtualization for improved performance with larger datasets, though HTML rendering still creates an upper bound on scalability.

Example Usage

gantt.config.date_format = "%Y-%m-%d %H:%i";
gantt.init("gantt_container");

gantt.parse({
  data: [
    { id: 1, text: "Project Kickoff", start_date: "2025-02-01", duration: 3 },
    { id: 2, text: "Development Phase", start_date: "2025-02-04", duration: 15, parent: 1 },
    { id: 3, text: "Testing", start_date: "2025-02-19", duration: 7, parent: 1 }
  ],
  links: [
    { id: 1, source: 1, target: 2, type: "0" },
    { id: 2, source: 2, target: 3, type: "0" }
  ]
});

Strengths

Comprehensive documentation and extensive examples make DHTMLX Gantt accessible to developers at all levels. The Standard edition provides substantial functionality for open-source projects, while the PRO edition adds auto-scheduling, critical path analysis, and resource management.
Active maintenance and a large user community mean questions get answered and issues get resolved.

Limitations

HTML-based rendering introduces performance constraints with large datasets, a limitation that becomes significant for enterprise-scale applications. The GPL license for Standard edition requires open-source projects or commercial licensing.

Best For

Small to medium projects: Applications with hundreds to low thousands of tasks where HTML rendering performance remains acceptable.

Open-source projects: Teams that can leverage the GPL-licensed Standard edition.

Rapid development: Projects prioritizing quick implementation over maximum scalability.

3: node-cron

Category: Cron-Style Task Execution
License: ISC
Website: nodecron.com

node-cron provides straightforward JavaScript cron functionality for Node.js applications. When you need to run scheduled tasks JavaScript style without complex infrastructure, node-cron delivers.

Overview

As a cron alternative JavaScript library, node-cron schedules task execution using familiar crontab syntax. It's lightweight, has no external dependencies, and handles the majority of time-based scheduling requirements.

Core Features

Full Cron Syntax: Standard five-field expressions plus optional seconds field for sub-minute precision.

Timezone Support: Schedule relative to specific timezones rather than server time.

Task Control: Programmatic start, stop, and validation of scheduled tasks.

Validation: Verify cron expressions before scheduling.

Example Usage

const cron = require('node-cron');

// Daily at 3:30 AM
cron.schedule('30 3 * * *', () => {
  performDatabaseBackup();
});

// Every 5 minutes
cron.schedule('*/5 * * * *', () => {
  processQueuedJobs();
});

// With timezone specification
cron.schedule('0 9 * * *', () => {
  sendDailyReport();
}, {
  timezone: 'America/New_York'
});

Strengths

Simplicity is node-cron's defining characteristic. Developers familiar with Unix cron can start scheduling immediately. The npm scheduler installs quickly with minimal footprint.

Limitations

Jobs run in-memory and don't persist across restarts. No built-in queuing, retry logic, or distributed execution support. For production applications requiring reliability, consider pairing with a persistence layer or using a more robust solution.

Best For

Simple automation: Fixed-schedule tasks where persistence isn't critical.

Development environments: Quick scheduling setup for testing and prototyping.

Lightweight applications: Single-server deployments with straightforward requirements.

4: BullMQ

Category: Job Queue and Task Scheduler
License: MIT
Website: bullmq.io

BullMQ represents the state of the art in Redis-backed job scheduling for Node.js. As the successor to Bull, it provides enterprise-grade job processing capabilities with modern TypeScript architecture.

Overview

BullMQ stores jobs in Redis, enabling persistence across restarts, distributed processing across multiple servers, and advanced features like priorities, retries, and job dependencies. For production backend scheduling JavaScript requirements, BullMQ is a leading choice.

Core Features

Job Persistence: Jobs survive application restarts through Redis storage.

Distributed Processing: Scale horizontally with workers across multiple servers.

Advanced Scheduling: Cron patterns, delayed execution, and repeatable jobs.

Job Flows: Create dependencies between jobs for complex workflows.
Automatic Retries: Configurable retry strategies with exponential backoff.

Example Usage

const { Queue, Worker } = require('bullmq');

const notificationQueue = new Queue('notifications', {
  connection: { host: 'localhost', port: 6379 }
});

// Schedule recurring job
await notificationQueue.upsertJobScheduler('daily-digest', {
  pattern: '0 9 * * *'
}, {
  name: 'send-digest',
  data: { type: 'daily' }
});

// Process jobs
const worker = new Worker('notifications', async (job) => {
  await sendNotification(job.data);
}, {
  connection: { host: 'localhost', port: 6379 }
});

Strengths

Production-grade reliability backed by Redis. Horizontal scaling for high-volume processing. Rich feature set covering complex scheduling scenarios. TypeScript-first design with excellent type safety.

Limitations

Requires Redis infrastructure, adding operational complexity. Learning curve is steeper than simpler alternatives.

Best For

Production job processing: Reliability and scalability requirements exceed simple cron solutions.

Distributed systems: Applications spanning multiple servers or containers.

Complex workflows: Job dependencies, priorities, and guaranteed execution needs.

5: Frappe Gantt

Category: Lightweight Gantt Visualization
License: MIT
Website: frappe.io

Frappe Gantt emerged from the ERPNext project when its developers needed an attractive, open-source Gantt chart library. The result prioritizes aesthetics and simplicity over comprehensive features.

Overview

Frappe Gantt provides clean, SVG-based Gantt visualization with minimal setup. It's designed for straightforward timeline display rather than complex project management.

Core Features

Modern Visual Design: SVG rendering produces crisp, professional-looking charts.

Interactive Editing: Drag tasks to reschedule, resize to change duration.

Multiple Views: Day, week, month, and year view modes.

Zero Dependencies: No external libraries required.

Customizable Popups: Modify task detail popups to match application needs.

Example Usage

const tasks = [
  {
    id: '1',
    name: 'Design Phase',
    start: '2025-02-01',
    end: '2025-02-15',
    progress: 60
  },
  {
    id: '2',
    name: 'Implementation',
    start: '2025-02-16',
    end: '2025-03-15',
    progress: 0,
    dependencies: '1'
  }
];

const gantt = new Gantt('#gantt', tasks, {
  view_mode: 'Week'
});

Strengths

Visual polish and lightweight footprint (~50KB) make Frappe Gantt ideal for simple timeline visualization. MIT license allows unrestricted commercial use. Quick to implement for basic requirements.

Limitations

Lacks advanced features: no resource management, critical path analysis, or auto-scheduling. Documentation is minimal. Not suited for complex enterprise requirements.

Best For

Simple project timelines: Displaying task schedules without advanced features.

Startup applications: Attractive visualization without licensing costs.

Prototyping: Fast implementation for MVPs and demos.

6: Agenda

Category: MongoDB-Backed Job Scheduling
License: MIT
Website: Agenda

Agenda provides job scheduling backed by MongoDB rather than Redis. For teams already invested in MongoDB, this simplifies infrastructure.

Overview

Agenda combines cron-style scheduling with persistent job storage in MongoDB. Human-readable scheduling syntax makes it accessible to developers unfamiliar with traditional cron expressions.

Core Features

MongoDB Persistence: Jobs survive restarts without additional infrastructure.

Human-Readable Scheduling: Expressions like "every 5 minutes" or "at 3:00pm".

Job Prioritization: Control execution order when resources are constrained.

Concurrency Control: Limit simultaneous job processing.

Example Usage

const Agenda = require('agenda');

const agenda = new Agenda({
  db: { address: 'mongodb://localhost/agenda' }
});

agenda.define('generate-report', async (job) => {
  await generateAndSendReport(job.attrs.data);
});

agenda.every('1 day', 'generate-report', { type: 'daily-summary' });
agenda.schedule('tomorrow at 9am', 'generate-report', { type: 'weekly' });

await agenda.start();

Strengths

MongoDB integration simplifies infrastructure for teams already using that database. Human-readable syntax is more intuitive than cron expressions. Straightforward setup for basic scheduling needs.

Limitations

Throughput doesn't match Redis-backed solutions for high-volume processing. Development activity has slowed compared to alternatives.

Best For

MongoDB-centric stacks: Avoiding additional Redis infrastructure.

Moderate job volumes: Applications processing hundreds rather than thousands of jobs per minute.

Readable scheduling syntax: Teams preferring human-readable expressions over cron notation.

Choosing the Right Library

Matching libraries to requirements:

For Online Scheduling JavaScript Tools

When building online scheduling JavaScript applications, appointment systems, reservation platforms, event management tools, consider your scale and complexity:

Simple time slot selection might only need Frappe Gantt with basic validation logic.

Complex resource scheduling with multiple constraints, availability rules, and optimization requirements benefits from ScheduleJS as the visualization and planning engine.

Background processing for confirmations, reminders, and data synchronization calls for BullMQ or Agenda depending on your database preferences.

Conclusion

The JavaScript ecosystem provides mature solutions for every scheduling challenge in 2025. From enterprise-grade Gantt visualization with ScheduleJS to lightweight charting with Frappe Gantt, from simple JavaScript cron jobs with node-cron to distributed job processing with BullMQ—developers have options for every requirement.

Whatever you're building: project management dashboards, resource planning systems, booking platforms, or automation pipelines—these JavaScript developer tools provide the foundation. The key is matching each library's strengths to your actual requirements. Start with the end state in mind: what scale must you support, what customization do you need, and what performance characteristics are non-negotiable?

The best scheduling solution is one your team can implement effectively today and scale confidently tomorrow. Choose accordingly.

Advanced Drag and Drop Operations

Gaetan Gasoline — Thu, 29 Jan 2026 15:51:32 +0000

The Drag shadow uses the same ActivityRenderer

Its activity renderer is triggered by the DragViewTransversalSystemLayer to draw on the above-view canvas. Any activity-related logic will be drawn by the renderer during dragging operations.

Activities can be created in dragging mode using the graphics ActionContext. Activities created this way follow the same behavior as standard dragged activities.

Accessing the Drag Canvas

Access the drag canvas in the drawLayer method called by DragViewTransversalSystemLayer. Like any ScheduleJS class, you can extend this class to:

Handle additional drawing operations
Add specific logic
Create a brand new TransversalSystemLayer with custom code

Resource Row Filtering During Drag and Drop

ScheduleJS lets you act on the graphics and trigger any operation in reaction to events. You can for example modify the tree rows structure, trigger system layers specific modes, adapt the grid, and play with any ScheduleJS API you like.

Scrolling to a Row After Dropping

The Angular viewport features various methods for scrolling to specific rows.
The example below demonstrates that you can scroll to a specific row based on events even if they are coming from outside of the desired Gantt context. Note that multiple options and parameters are available to fine-tune and create the perfect scrolling behaviour.

When a list is filtered during dragging but the filter is removed after dropping, users might want to see where they dropped the activity. In such case, you can trigger a scroll action in the onActivityDragFinished event callback using the ScheduleJS scrolling API methods.

Disable Dragging of Specific Activities

ScheduleJS implements the same setEditModeCallback method as FlexGanttFX. It permits to define what kind of dragging operations are permitted after running validations based on the current state of your app for candidate activity.

Row Management and Layout Control

Gaetan Gasoline — Thu, 29 Jan 2026 15:22:23 +0000

Controlling Row Height

In ScheduleJS, controlling a Row height works exactly as it does in FlexGanttFX. You can use the Row.setHeight method from the Row class to programmatically adjust the height of any Row in your Gantt chart.

The video below demonstrates how you can use it to create features that instantly modify the graphics rows heights with a button:

Different layout types per Row

ScheduleJS supports displaying different layout types (GanttLayout, ChartLayout) for any Row or even for its inner lines. To do so, you just have to set the layout type at Row creation, just like in FlexGanttFX.

To change the layouts, you can override the getLineLayout method to return the desired layout for the main row or an inner line using line indexes.

More about inner lines

ScheduleJS provides the same LinesManager API found in FlexGanttFX. By default, the library implements two base classes:

The EqualLinesManager that handles multiple lines with same height for a Row
The AutoLinesManager that will create new inner lines to facilitate the display of stacking activities

Do not hesitate to read other blog articles, read our developer manual, and inspect ScheduleJS objects to find more information about the public methods available to you and explanations about how they should be implemented.

ScheculeJS

Top 5 Best Gantt Frameworks in 2025

Gaetan Gasoline — Thu, 02 Oct 2025 07:56:49 +0000

In today’s digital-first business environment, project management efficiency is a crucial differentiator. Companies of all sizes—from startups to global enterprises—need reliable tools to plan, track, and optimize workflows. Among the most effective tools, Gantt frameworks provide interactive, visual timelines that map out tasks, deadlines, dependencies, and milestones.

Whether you are building a project management application, integrating scheduling into an ERP, or simply visualizing timelines in a SaaS platform, choosing the right Gantt framework is essential.

What Is a Gantt Framework?

Before diving into the ranking, let’s clarify what a **Gantt framework **actually is.

A Gantt framework is a software library or toolkit that allows developers to embed Gantt charts into applications. Unlike static charts, these frameworks provide dynamic and interactive features such as:

Drag-and-drop task scheduling

Real-time updates
Hierarchical task structures
Resource allocation management
Critical path analysis
Multi-project views

By leveraging a Gantt framework, organizations save time building scheduling tools from scratch and instead focus on customizing them for their business needs.

1. ScheduleJS

When it comes to high-performance scheduling frameworks, ScheduleJS remains the undisputed leader. Unlike many lightweight libraries, ScheduleJS is designed for enterprise-grade use cases where reliability, scalability, and speed are non-negotiable.

Key Advantages of ScheduleJS:

Unmatched Performance
ScheduleJS is built to handle tens of thousands of tasks simultaneously without performance degradation. This makes it perfect for industries like aviation, manufacturing, logistics, and construction.
Real-Time Scheduling
Unlike traditional Gantt chart libraries, ScheduleJS supports real-time data synchronization, ensuring teams always see the most up-to-date project status.
Full Customization
Every part of the chart—tasks, milestones, resource lanes, tooltips—can be tailored to match specific workflows.
Framework Agnostic
Works seamlessly with Angular, React, Vue.js, and Vanilla JavaScript.
Integration-Ready
ScheduleJS integrates smoothly with ERP systems, CRMs, HR tools, and custom enterprise platforms.

Best Use Cases for ScheduleJS:

Large-scale manufacturing project planning
Airline crew scheduling
Hospital and healthcare resource management
Real-time logistics and supply chain planning

Link: Schedulejs.com

2. DHTMLX Gantt: A Flexible and Popular Choice

DHTMLX Gantt is one of the most widely used frameworks for interactive Gantt charts. It offers a good balance between functionality and accessibility, making it a go-to option for many developers.

Key Features

User-Friendly Interface: Drag-and-drop support for task scheduling.
Dependencies & Critical Path: Easily visualize complex project
relationships.
Resource Management: Assign and track workload distribution.
Compatibility: Works with Angular, React, Vue.js.

Pros

Well-documented and mature library.
Good for small to medium-sized projects.
Lower learning curve compared to enterprise frameworks.

Cons

Limited scalability compared to ScheduleJS.
Performance may drop with very large datasets.

Link: DHTMLX Gantt

3. Bryntum Gantt: Enterprise Power for Complex Projects

Bryntum Gantt is built with enterprise needs in mind. It offers advanced functionality similar to ScheduleJS but with a strong focus on integration with Ext JS and modern JavaScript frameworks.

Key Features

Multi-Project Management: Handle multiple timelines in parallel.
Constraint-Based Scheduling: Ensure rules and dependencies are respected.
Advanced Resource Allocation: Visualize workloads and balance teams effectively.
Interactive UI: Drag-and-drop, zoom levels, and advanced grid features.

Best For

Large companies with complex projects.

Link: Bryntum Gantt

4. Syncfusion Gantt Chart: All-in-One UI Component

Part of the Syncfusion Essential Studio, the Syncfusion Gantt Chart is a strong contender for developers who need a multi-platform, ready-to-use Gantt component.

Key Features

Cross-Platform: Works with Angular, React, Vue, ASP.NET, and Blazor.
Hierarchical Task Management: Display subtasks, milestones, and dependencies.
Export Support: Export Gantt charts to Excel, PDF, and CSV.
Customization API: Adapt the look and behavior easily.

Pros

Great option for developers already invested in the Syncfusion ecosystem.
Quick integration without complex setup.

Cons

Not as optimized for very large datasets.

Link:Syncfusion Gantt Chart

5. AnyChart Gantt: Modern and Visual

AnyChart Gantt is more focused on data visualization rather than heavy-duty project planning. It’s ideal for businesses that want clean, modern, and visually appealing charts.

Key Features

Interactive & Aesthetic Visuals: Sleek modern design for dashboards.
Multiple Timeline Support: Useful for high-level overviews.
Good Documentation: Easy to integrate for developers.

Best Use Cases

Dashboards that require visual clarity more than operational complexity.
SaaS applications where aesthetics are a priority.

Link:AnyChart Gantt

Conclusion: The Best Gantt Framework in 2025

Selecting the right Gantt framework is not just a technical decision—it directly impacts the success of your project management strategy.

If you need to handle thousands of tasks in real-time with no compromise on performance, ScheduleJS is by far the best option.
For medium-sized projects where flexibility and ease of integration are key, DHTMLX Gantt or Syncfusion Gantt will get the job done.
If your organization requires enterprise-grade features with advanced resource allocation, Bryntum Gantt is a strong contender.
And for companies focusing on visual reporting and dashboards, AnyChart Gantt provides modern, clean charting capabilities.

Concrete takeaway: If your business deals with complex, large-scale, or mission-critical scheduling, ScheduleJS should be your #1 choice. It delivers the speed, scalability, and customization needed for enterprise project management in 2025 and beyond.

Angular Gantt Chart: Project Planning

Gaetan Gasoline — Wed, 01 Oct 2025 12:01:15 +0000

Angular Gantt Chart: Project Planning

When building project management tools, one of the most common requirements is a Gantt chart. These charts are widely used for visualizing tasks, dependencies, and timelines. But if you’re working with Angular, how do you integrate a Gantt chart effectively?

In this article, we’ll explore:

What a Gantt chart is and why it’s useful in web apps.
Different approaches to building a Gantt chart in Angular.
A hands-on example of creating an Angular Gantt chart ScheduleJS.

What is a Gantt Chart?

A Gantt chart is a timeline-based visualization of tasks in a project. It usually represents:

Start and end dates of tasks
Dependencies between tasks
Progress tracking
Resources allocation

This makes it a popular choice for project managers, developers, and even non-technical stakeholders.

Approaches to Building an Angular Gantt Chart

There are several ways to implement a Gantt chart in Angular:

1. Build from scratch with D3.js or SVG.
- Maximum control.
- High development effort.
- Good if you want full customization.

2. Use Angular charting libraries (e.g. ngx-charts, Highcharts with Angular wrapper)
- Easier integration.
- Limited Gantt-specific features.

3. Use a dedicated scheduling library (like ScheduleJS, dhtmlxGantt, or Bryntum)

Ready-to-use Gantt chart features.
More advanced but requires learning the API.

For this article, we’ll illustrate the third approach, using ScheduleJS as an example, since it provides out-of-the-box Gantt functionality with Angular compatibility.

Why Consider ScheduleJS?

ScheduleJS is one of several options available for adding a Gantt chart in Angular. It focuses on performance and interactivity, which makes it suitable for projects with a large number of tasks.

Unlike generic charting libraries, ScheduleJS is designed specifically for scheduling and planning. This means that features such as task dependencies, drag-and-drop scheduling, and zooming across different time scales are already built in.

It’s worth noting that other libraries exist, and the right choice depends on your project’s requirements. If you need a lightweight chart for a handful of tasks, a simple D3 implementation might be enough. But if you’re working on complex enterprise planning, a specialized tool like ScheduleJS can save a lot of development time.

Practical Considerations for Developers

When deciding how to integrate a Gantt chart in Angular, here are a few questions to ask:

Data source: Are tasks coming from a database, an API, or static configuration?
Performance needs: How many tasks will the chart handle at once — dozens, hundreds, or thousands?
User interaction: Do users only need to view tasks, or should they be able to edit, drag, and resize them?
Customization: Will you need to adjust the look and feel of the chart to match your application’s design system?

These considerations often determine whether a lightweight approach will work, or whether it’s better to use a library specialized for scheduling.

Use Cases for Angular Gantt Charts

Some industries where an Angular Gantt chart can make a real difference:

Software development: Sprint planning, release scheduling, and tracking technical debt.
Construction: Monitoring dependencies across subcontractors and timelines.
Healthcare: Coordinating staff shifts and patient treatments.
Logistics: Scheduling deliveries, warehouse operations, and supply chain tasks.

In each of these cases, the ability to visualize time-based dependencies is critical. A simple table of tasks often isn’t enough to communicate project complexity — that’s where the Gantt chart becomes invaluable.

Conclusion

Integrating a Gantt chart into an Angular application is a common requirement in project management solutions. You can either build your own from scratch, use a general charting library, or rely on a dedicated scheduling tool.

In this article, we explored the concept of Gantt charts, why they matter, and how tools like ScheduleJS can help developers create effective planning interfaces in Angular.

Ultimately, the best approach depends on your project’s scope. For small applications, a simple timeline chart may be enough. For larger systems, a dedicated Angular Gantt chart solution can significantly improve usability and performance.

Angular Rome Conference

Gaetan Gasoline — Wed, 01 Oct 2025 09:04:26 +0000

Introduction

Angular has remained one of the most influential frontend frameworks for building large-scale applications. Beyond its technical strengths, the ecosystem thrives on community gatherings where experts, practitioners, and enthusiasts share ideas, present new features, and explore best practices. As we often attend Angular conferences to stay connected with the community, this time Nicolas Delbiaggio was present at Angular Rome (NgRome) to report on the key insights. NgRome stands out as a two-day experience combining hands-on workshops with insightful talks from some of the most prominent voices in the Angular world.

Structure of the Conference

The event was divided into two complementary parts:

Day 1: Workshops

Led by Angular experts such as Manfred Steyer and Rainer Hahnekamp, the workshops were designed to provide participants with real-world challenges, theoretical solutions, and live coding demonstrations. The emphasis was on learning by doing: attendees were encouraged to ask questions, test alternative solutions, and practice exercises with direct guidance.

Day 2: Conference Talks

The second day brought a mix of technical talks, sponsor pitches, and networking sessions. Keynote speakers included Minko Gechev (Angular Tech Lead at Google), Fabian Gosebrink, Fabio Biondi, and others — each offering insights into the current and future state of Angular.

The conference design ensured that participants not only learned new skills but also built meaningful professional connections.

Beyond the Technical: Soft Skills and Networking

The organizers placed a strong emphasis on the human side of development. Alongside the technical sessions, participants were encouraged to:

Refine their presentation skills.
Practice the art of asking good questions.
Engage in small talk and networking during coffee breaks.
Showcase company branding and visibility through merchandising opportunities.

These aspects highlight a key point: conferences like Angular Rome are not only about coding techniques but also about community growth, professional visibility, and interpersonal skills.

Technical Highlights

Domain-Driven Design (DDD) with Angular
A recurring theme was Domain-Driven Design (DDD) and how its principles can be effectively applied to frontend architectures. By aligning UI components, domain models, and utilities within clear boundaries, Angular teams can create scalable and maintainable applications.
Resource: All about DDD for frontend architectures with Angular (Angular Architects)

Nx & Sheriff: Enforcing Module Boundaries
Tools like Nx and Sheriff were discussed as ways to ensure clear module boundaries in large Angular applications. This prevents accidental coupling and enforces consistent architecture across teams.

Signals and Resources
One of the most exciting evolutions in Angular is the introduction of signals — a reactive primitive for state management.

Resources provide a way to integrate asynchronous data with signals, enabling cleaner, more declarative code.
HttpResource was showcased through demos, illustrating how to bind remote data sources directly to signals in a structured way.

State Management: Why State Matters
The sessions stressed that state is the backbone of any application. Different layers were discussed:

Dumb component state (local, UI-driven).
Smart component state (logic-heavy).
Feature state (module-level).
Global state (application-wide).

The NgRx Signal Store was introduced as a modern approach, combining:

withState
withComputed
withMethods
withEntities

This makes managing application state more intuitive and aligned with Angular’s new reactive model.

Micro Frontends with Module Federation
For large organizations, micro frontends are becoming a necessity. Talks illustrated how Angular supports this architecture through separate builds, deployments, and federated modules, allowing independent teams to ship features without bottlenecks.

What’s Next for Angular
The roadmap for Angular includes several highly anticipated features:

Zoneless change detection for improved performance.
AI guidance to assist developers in generating code and following best practices.
Signal forms for reactive form handling.
HttpResource with mutation support.
Enhanced animations and RxJS independence.

The Role of AI in Development
The conference also touched on the impact of AI on Angular development:

Generating boilerplate code.
Creating files and guides tailored to best practices.
Using tests as a way to guide AI-generated implementations.

Testing Best Practices
Finally, the art of testing was a dedicated focus area. Sessions covered:

Unit testing for isolated logic.
Integration testing to verify interactions between modules.
End-to-end (E2E) testing for full application validation.

Conclusion

The Angular Rome Conference successfully blended deep technical insights with community-driven learning and networking. Attendees walked away not only with practical skills — from DDD to signal stores — but also with a clear vision of Angular’s future: faster, more reactive, and AI-assisted.

As Angular continues to evolve, conferences like this act as a compass, helping developers and organizations navigate new tools, paradigms, and practices. For anyone invested in building modern, scalable web applications, Angular Rome reaffirmed that the framework is alive, dynamic, and ready for the next generation of challenges.

References: schedulejs

Angular VS VueJS

Gaetan Gasoline — Fri, 19 Jul 2024 13:05:28 +0000

Introduction

In the rapidly evolving landscape of web development, Angular and Vue.js stand out as two of the most popular frameworks for building dynamic, single-page applications. Both frameworks offer unique advantages and cater to different development needs and preferences. This extensive comparison will explore the histories, core philosophies, architectures, performance, learning curves, development speeds, community support, tooling, libraries, case studies, and future prospects of Angular and Vue.js. By the end of this guide, you should be well-equipped to choose the right framework for your next project.

History and Background
Core Philosophies
Architecture
Performance
Learning Curve
Development Speed
Community and Ecosystem
Tooling and Libraries
Case Studies
Future Prospects
Conclusion

1. History and Background

Angular
Angular, originally developed by Google, was first released in 2010 as AngularJS. It was a groundbreaking framework at the time, offering an innovative way to build dynamic, single-page applications. Over time, as web development practices evolved, so did Angular. In 2016, Google released Angular 2, a complete rewrite of AngularJS. This new version, often referred to simply as Angular, was built to meet modern web development needs, providing improved performance, a more modular architecture, and support for modern JavaScript standards.

Evolution of Angular
AngularJS introduced the Model-View-Controller (MVC) paradigm and two-way data binding, which were revolutionary concepts at the time. However, these features also led to performance issues in large applications. Angular 2 and subsequent versions embraced a more efficient unidirectional data flow, along with modern JavaScript features like classes and decorators, which enhanced performance and maintainability.

Key Versions and Features

AngularJS (2010): Introduced MVC architecture, two-way data binding, and dependency injection.
Angular 2 (2016): Complete rewrite with a focus on performance, modularity, and mobile-first applications.
Angular 4 (2017): Improved performance and reduced code size.
Angular 6 (2018): Introduced Angular CLI, ng-update, and Angular Elements for integrating Angular components into other frameworks.
Angular 9 (2020): Featured the Ivy compiler, which brought significant performance improvements and reduced bundle sizes.
Angular 11 and beyond: Continued focus on developer experience, stricter typing, and tooling enhancements.

Vue.js
Vue.js, developed by Evan You, was first released in 2014. It was designed to be a more approachable and flexible alternative to existing frameworks like Angular and React. Vue.js emphasizes simplicity and ease of integration, making it a popular choice for both small projects and large-scale applications.

Evolution of Vue.js
Vue.js started as a library focused on the view layer, similar to React. Over time, it evolved into a full-fledged framework, offering a comprehensive solution for building web applications. Vue.js maintains a balance between ease of use and flexibility, allowing developers to gradually adopt its features as needed.

Key Versions and Features

Vue.js 1.0 (2015): Initial release with a focus on simplicity and ease of integration.
Vue.js 2.0 (2016): Improved performance, better support for server-side rendering, and a more flexible component system.
Vue.js 3.0 (2020): Introduced the Composition API for better code organization and reusability, improved TypeScript support, and a smaller, faster runtime.

2. Core Philosophies

Angular
Angular is a full-fledged framework that provides a comprehensive solution for building web applications. Its core philosophy revolves around offering developers all the tools they need out of the box. This includes built-in modules for routing, form handling, HTTP client, and more. Angular promotes the use of TypeScript, a statically typed superset of JavaScript, which helps catch errors early in the development process and improves code maintainability.

Key Philosophies of Angular

Comprehensive Solution: Aims to be a one-stop-shop for web development needs, reducing reliance on third-party libraries.
TypeScript: Encourages early error detection and robust codebases.
Modularity: The framework’s modular architecture facilitates separation of concerns, making applications easier to manage and scale.
Dependency Injection: Promotes code reuse and testability.
MVVM Architecture: Encourages a clear separation between the UI (View), logic (ViewModel), and data (Model).

Vue.js
Vue.js is designed to be an incrementally adoptable framework, meaning it can be used as a library to enhance existing projects or as a full-fledged framework for building complex applications. Its core philosophy centers around simplicity, flexibility, and ease of integration. Vue.js aims to be approachable for beginners while providing powerful features for advanced users.

Key Philosophies of Vue.js

Incremental Adoption: Can be used as a library or a full framework, depending on the project needs.
Simplicity and Flexibility: Designed to be easy to learn and integrate, with a gentle learning curve.
Reactive Data Binding: Utilizes a reactive data binding system to keep the UI in sync with the underlying data model.
Component-Based Architecture: Encourages reusability and composability of UI components.
Ease of Integration: Can be easily integrated into existing projects or libraries.

3. Architecture

Angular
Angular follows the Model-View-Controller (MVC) architecture, although it’s more accurately described as Model-View-ViewModel (MVVM). This separation of concerns helps in organizing the application’s codebase. Angular applications are structured into modules, components, services, and directives:

Modules: Organize the application into cohesive blocks of functionality.
Components: Define the UI and its behavior.
Services: Handle business logic and data management.
Directives: Extend the HTML by adding custom behavior.

Angular Components and Modules

Components: The building blocks of an Angular application, consisting of a template (HTML), a class that defines the behavior (TypeScript), and optional styles (CSS).
Modules: Encapsulate related components, services, directives, and pipes into cohesive units. The root module, typically AppModule, bootstraps the application.
Services and Dependency Injection: Angular’s DI system allows services to be injected into components, promoting code reuse and testability.

Angular Routing
Angular’s built-in router enables navigation between different views or components. It supports lazy loading, which improves initial load times by loading components only when needed.

Vue.js
Vue.js follows a component-based architecture, similar to React. This architecture encourages the creation of reusable, self-contained components that manage their own state and behavior. Vue.js applications typically use a unidirectional data flow, where state is passed down from parent components to child components via props. Vue.js provides a flexible system for managing state, routing, and side effects.

Vue.js Components

Single-File Components: Vue.js components are typically written in single-file components (SFCs) with .vue extension, encapsulating the template, script, and styles.
Reactive Data Binding: Vue.js components utilize a reactive data binding system, automatically updating the UI when the underlying data changes.
Computed Properties and Watchers: Provide a way to react to changes in data and perform complex computations within components.

Vue.js State Management

Props and Events: State is passed down from parent components to child components via props, and child components communicate back to parent components using events.
Vuex: A state management library for Vue.js, inspired by Flux and Redux, providing a centralized store for managing application state.
Composition API: Introduced in Vue 3.0, it allows developers to organize and reuse code more effectively within components.

Vue.js Routing
Vue Router is the official router for Vue.js, providing dynamic routing, nested routes, and route guards. It integrates seamlessly with Vue.js applications and supports lazy loading of components.

4. Performance

Angular
Angular’s performance has significantly improved since its initial release. The framework’s Ahead-of-Time (AOT) compilation precompiles the application during the build process, resulting in faster rendering times. Angular’s change detection mechanism, which uses a hierarchical tree of components, ensures that only the necessary parts of the UI are updated. However, this can still lead to performance bottlenecks in very large applications if not managed properly.

Performance Optimization in Angular

AOT Compilation: Converts Angular templates into highly optimized JavaScript code during the build process, reducing the amount of work done at runtime.
Change Detection: Angular’s change detection system, based on zones, automatically detects changes and updates the view. Developers can optimize performance by using OnPush change detection strategy and manual control over change detection.
Lazy Loading: Loads only the necessary parts of the application, improving initial load time and reducing the amount of code downloaded.
Tree Shaking: Removes unused code from the final bundle, reducing its size and improving load times.

Vue.js
Vue.js is known for its excellent performance, thanks to its lightweight and efficient design. The framework’s reactivity system ensures that only the necessary components are updated when the underlying data changes. Vue.js 3.0 introduced several performance improvements, including a smaller and faster runtime.

Performance Optimization in Vue.js

Reactivity System: Vue.js’s reactivity system ensures efficient updates to the UI by tracking dependencies and only re-rendering affected components.
Virtual DOM: Similar to React, Vue.js uses a virtual DOM to minimize direct manipulations of the actual DOM, improving performance.
Lazy Loading: Vue Router supports lazy loading of components, which can significantly improve initial load times.
Code Splitting: Vue.js supports code splitting with tools like Webpack, allowing developers to split their code into smaller bundles that are loaded on demand.

5. Learning Curve

Angular
Angular has a steeper learning curve compared to Vue.js. This is partly due to its comprehensive nature and the numerous concepts and tools it introduces. Developers need to familiarize themselves with TypeScript, decorators, dependency injection, and Angular-specific syntax. However, once mastered, Angular provides a robust framework for building large-scale applications.

Key Learning Aspects of Angular

TypeScript: Angular’s preference for TypeScript requires developers to learn a new language, although it offers significant benefits in terms of error checking and code quality.
Angular CLI: A powerful tool for scaffolding, building, and managing Angular applications. Learning to use the CLI effectively can greatly enhance productivity.
Templates and Directives: Angular’s templating syntax and use of directives (e.g., ngIf, ngFor) require a learning period.
Dependency Injection: Understanding Angular’s DI system is crucial for managing services and promoting code reuse.
Angular Modules: Learning how to structure an application using Angular’s module system can be challenging but is essential for scalability and maintainability.

Vue.js
Vue.js is generally considered easier to learn, especially for developers with a background in JavaScript and HTML. Its syntax is simple and intuitive, and the core concepts are easy to grasp. Vue.js’s documentation is well-written and beginner-friendly, making it accessible to developers of all skill levels.

Key Learning Aspects of Vue.js

Single-File Components: Vue.js’s single-file components encapsulate the template, script, and styles in a single file, making it easy to manage component logic.
Reactivity System: Understanding Vue.js’s reactivity system is key to managing state and keeping the UI in sync with the data model.
Vue CLI: A tool for scaffolding and managing Vue.js projects, providing a streamlined development experience.
Vuex: For state management in larger applications, learning Vuex is essential for managing application state in a predictable manner.
Composition API: Introduced in Vue 3.0, the Composition API provides a flexible way to organize and reuse code within components.

6. Development Speed

Angular
Angular’s comprehensive nature can both aid and hinder development speed. On one hand, having all the necessary tools built into the framework can speed up development by reducing the need to integrate third-party libraries. On the other hand, the initial setup and configuration can be time-consuming, and the verbosity of Angular’s syntax can slow down development.

Factors Influencing Angular Development Speed

Angular CLI: Streamlines the development process with commands for generating components, services, modules, and more.
Built-in Features: Angular’s built-in features, such as forms, HTTP client, and routing, reduce the need for third-party libraries.
Code Generation: Angular’s schematics allow for automatic generation of boilerplate code, speeding up repetitive tasks.
Modularity: Angular’s module system promotes organization and reuse of code, which can speed up development in large projects.
Initial Setup: The initial setup and learning curve can slow down development, especially for newcomers to the framework.

Vue.js
Vue.js’s simplicity and flexibility can lead to faster development, particularly for smaller applications or prototypes. The ability to choose specific tools and libraries allows developers to tailor their development environment to their needs. However, this flexibility can also lead to decision fatigue and inconsistencies in larger teams.

Factors Influencing Vue.js Development Speed

Vue CLI: A tool for scaffolding and managing Vue.js projects, providing a streamlined development experience.
Component Reusability: Vue.js’s component-based architecture promotes reusability, speeding up development by reducing the amount of code that needs to be written.
Third-Party Libraries: The Vue.js ecosystem offers a wide range of third-party libraries that can accelerate development by providing ready-made solutions for common tasks.
Flexibility: Vue.js’s flexibility allows developers to choose the best tools for their specific needs, potentially speeding up development.
Decision Fatigue: The need to choose and integrate various libraries for state management, routing, and side effects can slow down development, especially for larger teams or projects.

7. Community and Ecosystem

Angular
Angular has a strong community and ecosystem, largely driven by Google’s backing. The Angular team regularly releases updates and improvements, and there is a wealth of documentation, tutorials, and third-party libraries available. Angular also has a robust CLI (Command Line Interface) that streamlines many aspects of development, from project setup to testing and deployment.

Angular Community and Resources

Official Documentation: Comprehensive and well-maintained documentation that covers all aspects of the framework.
Angular University: A platform offering courses and tutorials on Angular development.
Angular Blogs and Conferences: Numerous blogs and conferences dedicated to Angular, such as ng-conf and AngularConnect.
Third-Party Libraries: A vast array of third-party libraries and tools, such as Angular Material, NGXS, and more.

Vue.js
Vue.js has a vibrant and growing community, despite being a relatively younger framework. The community is known for its welcoming and helpful nature, with extensive documentation, tutorials, and resources available for developers. Vue.js’s ecosystem is highly modular, allowing developers to choose the best tools for their specific needs.

Vue.js Community and Resources

Official Documentation: Detailed and well-maintained documentation that covers the core concepts and advanced topics.
Vue Mastery: A platform offering courses and tutorials on Vue.js development.
Vue.js Blogs and Conferences: Numerous blogs and conferences dedicated to Vue.js, such as VueConf and Vue.js Amsterdam.
Third-Party Libraries: A wide range of third-party libraries and tools, such as Vuetify, Vue Router, and Vuex.

8. Tooling and Libraries

Angular
Angular’s CLI is a powerful tool that automates many aspects of development, including scaffolding, testing, and deployment. Angular also has built-in support for internationalization, forms, and HTTP communication. The framework’s extensive set of built-in tools and libraries can be both a blessing and a curse, providing everything needed for development but also adding to the complexity.

Key Angular Tools and Libraries

Angular CLI: A command-line tool for creating, building, and managing Angular applications.
Angular Material: A UI component library that follows the Material Design guidelines.
RxJS: A library for reactive programming using observables, integrated into Angular for handling asynchronous operations.
Angular Universal: A tool for server-side rendering (SSR) of Angular applications.
Protractor: An end-to-end testing framework for Angular applications.
NgRx: A state management library based on Redux principles, tailored for Angular.

Vue.js
Vue.js’s ecosystem offers a wide range of tools and libraries, allowing developers to pick and choose based on their needs. Vue CLI is a popular tool for setting up and managing Vue.js projects. Vue.js’s modularity means developers can easily integrate third-party libraries for routing, state management, and side effects.

Key Vue.js Tools and Libraries

Vue CLI: A command-line tool for creating, building, and managing Vue.js projects.
Vuetify: A UI component library that follows the Material Design guidelines.
Vue Router: The official router for Vue.js, providing dynamic routing, nested routes, and route guards.
Vuex: A state management library inspired by Flux and Redux, providing a centralized store for managing application state.
Nuxt.js: A framework for server-side rendering (SSR) and static site generation (SSG) with Vue.js.
Vue Test Utils: The official unit testing utility library for Vue.js.

Si vous voulez voir tous l'article je vous invite a allez voir ici: Angular vs VueJS

Angular VS React

Gaetan Gasoline — Thu, 18 Jul 2024 12:19:20 +0000

Introduction

In the world of web development, two of the most popular frameworks are Angular and React. Both offer powerful tools for building dynamic, single-page applications, but they do so in fundamentally different ways. This comprehensive comparison will delve deep into the various aspects of Angular and React, including their histories, core philosophies, architecture, performance, learning curve, development speed, community support, tooling, libraries, case studies, and future prospects. By the end, you should have a clear understanding of the strengths and weaknesses of each framework, helping you make an informed decision about which one to use for your next project.

History and Background
Core Philosophies
Architecture
Performance
Learning Curve
Development Speed
Community and Ecosystem
Tooling and Libraries
Case Studies
Future Prospects
Conclusion

1. History and Background

Angular
Angular, originally developed by Google, was first released in 2010 as AngularJS. It was a revolutionary framework at the time, offering a way to build dynamic, single-page applications with ease. However, as web development practices evolved, so did Angular. In 2016, Google released Angular 2, a complete rewrite of AngularJS. This new version, often referred to simply as Angular, was built with modern web development needs in mind, offering improved performance, a more modular architecture, and support for modern JavaScript standards.

Evolution of Angular
AngularJS, the first iteration, relied heavily on the Model-View-Controller (MVC) paradigm, with a two-way data binding system that allowed automatic synchronization between models and views. This was groundbreaking but led to performance issues in large applications. Angular 2 and subsequent versions introduced a more efficient unidirectional data flow and embraced modern JavaScript features, including classes and decorators, which facilitated better performance and maintainability.

Key Versions and Features

AngularJS (2010): Introduced the MVC architecture, two-way data binding, and dependency injection.
Angular 2 (2016): Complete rewrite with a focus on performance, modularity, and mobile-first applications.
Angular 4 (2017): Backwards-compatible release that improved performance and reduced the size of the generated code.
Angular 6 (2018): Introduced the Angular CLI, ng-update, and Angular Elements for integrating Angular components into other frameworks.
Angular 9 (2020): Featured the Ivy compiler, which brought significant performance improvements and reduced bundle sizes.
Angular 11 and beyond: Focused on improved developer experience, stricter typing, and tooling enhancements.

React
React, developed by Facebook, was first released in 2013. Unlike Angular, React is a library rather than a full-fledged framework. React’s primary focus is on building user interfaces, particularly for single-page applications. It introduced the concept of a virtual DOM, which significantly improved performance by reducing the number of direct manipulations to the actual DOM. React’s component-based architecture and declarative approach to UI development quickly made it a favorite among developers.

Evolution of React
React’s component-based architecture allowed developers to break down complex UIs into manageable, reusable pieces. The introduction of JSX (JavaScript XML), a syntax extension that allows HTML to be written within JavaScript, further streamlined the development process. Over the years, React has continually evolved, introducing hooks and concurrent mode to enhance functionality and performance.

Key Versions and Features

React 0.3 (2013): Initial release, introducing the concept of components and the virtual DOM.
React 0.14 (2015): Split React into two packages: react for components and react-dom for DOM rendering.
React 15 (2016): Improved performance with the introduction of the new reconciliation algorithm.
React 16 (2017): Introduced Fiber, a new core algorithm for rendering, allowing for incremental rendering and improved handling of updates.
React 16.8 (2019): Added hooks, enabling functional components to manage state and side effects.
React 17 and beyond: Focused on gradual upgrades and concurrent mode for better user experience during complex state transitions.

2. Core Philosophies

Angular
Angular is a full-fledged framework, meaning it provides a comprehensive solution for building web applications. Its core philosophy revolves around providing developers with all the tools they need out of the box. This includes built-in modules for routing, form handling, HTTP client, and more. Angular promotes the use of TypeScript, a statically typed superset of JavaScript, which helps catch errors early in the development process and improves code maintainability.

Key Philosophies of Angular

Comprehensive Solution: Angular aims to be a one-stop-shop for web development needs, reducing the need for third-party libraries.
TypeScript: Angular’s preference for TypeScript encourages early error detection and robust codebases.
Modularity: The framework’s modular architecture allows for separation of concerns, making applications easier to manage and scale.
Dependency Injection: Angular’s DI system promotes code reuse and testability.
MVVM Architecture: Encourages a clear separation between the UI (View), logic (ViewModel), and data (Model).

React
React, on the other hand, is a library focused solely on the view layer of an application. Its core philosophy is centered around simplicity and composability. React components are the building blocks of a React application, allowing developers to break down complex UIs into manageable pieces. React’s declarative approach makes it easy to reason about the state of the UI at any given time. Additionally, React’s ecosystem is highly modular, allowing developers to choose their own tools for state management, routing, and other concerns.

Key Philosophies of React

Simplicity and Focus: React focuses on the view layer, promoting simplicity and better separation of concerns.
Component-Based Architecture: Encourages reusability and composability of UI components.
Declarative UI: Simplifies the development process by allowing developers to describe what the UI should look like at any given state.
Virtual DOM: Enhances performance by minimizing direct DOM manipulations.
Flexibility: React’s ecosystem is highly flexible, enabling developers to integrate the best tools for state management, routing, and side effects handling. Web dev

3. Architecture

Modules: Organize the application into cohesive blocks of functionality.
Components: Define the UI and its behavior.
Services: Handle business logic and data management.
Directives: Extend the HTML by adding custom behavior.

Angular Components and Modules

Components: These are the building blocks of an Angular application. Each component consists of a template (HTML), a class that defines the behavior (TypeScript), and optional styles (CSS).
Modules: Angular applications are modular, with each module encapsulating related components, services, directives, and pipes. The root module, typically AppModule, bootstraps the application.
Services and Dependency Injection: Angular’s DI system allows services to be injected into components, promoting code reuse and testability.

Angular Routing
Angular’s built-in router enables navigation between different views or components. It supports lazy loading, which improves the initial load time by loading components only when needed.

React
React’s architecture is based on components, which are reusable and self-contained pieces of UI. These components can be functional or class-based, with functional components becoming more popular due to the introduction of hooks in React 16.8. React applications typically use a unidirectional data flow, where state is passed down from parent components to child components via props. State management in React can be handled in various ways, with popular solutions including Redux, MobX, and the Context API.

React Components

unctional Components: These are simple JavaScript functions that accept props and return React elements. They became more powerful with the introduction of hooks, which allow state and side effects management.
Class Components: These are ES6 classes that extend React.Component and have a render method that returns React elements. They can manage state and lifecycle methods but are gradually being replaced by functional components with hooks.

React State Management

State and Props: State is managed within components and passed down to child components via props. Props are read-only, ensuring a unidirectional data flow.
Hooks: React hooks, such as useState et un projet useEffect, allow functional components to manage state and side effects, respectively.
Context API: Provides a way to pass data through the component tree without having to pass props down manually at every level.
Redux: A popular state management library that provides a predictable state container for JavaScript applications. It uses a single store and actions to manage the state.

React Routing
React Router is a popular library for handling routing in React applications. It provides dynamic routing, nested routes, and route guards, allowing developers to define navigation in a declarative manner.

4. Performance

Performance Optimization in Angular

OT Compilation: Converts Angular templates into highly optimized JavaScript code during the build process, reducing the amount of work done at runtime.
Change Detection: Angular’s change detection system, based on zones, automatically detects changes and updates the view. Developers can optimize performance by using OnPush change detection strategy and manual control over change detection.
Lazy Loading: Loads only the necessary parts of the application, improving initial load time and reducing the amount of code downloaded.
Tree Shaking: Removes unused code from the final bundle, reducing its size and improving load times.

React
React’s virtual DOM is one of its key performance features. By diffing the virtual DOM with the actual DOM, React minimizes the number of direct DOM manipulations, which are expensive operations. React’s fiber architecture, introduced in React 16, further enhances performance by allowing the reconciliation process to be split into units of work that can be paused and resumed, making the application more responsive.

Performance Optimization in React

Virtual DOM: Updates only the parts of the actual DOM that have changed, reducing the number of expensive DOM operations.
Fiber Architecture: Improves rendering performance by breaking down the reconciliation process into small units of work that can be paused and resumed.
Code Splitting: With tools like Webpack and React.lazy, developers can split their code into smaller bundles that are loaded on demand, improving initial load times.
Memoization: React’s memo and hooks like useMemo et un projet useCallback help optimize rendering by preventing unnecessary re-renders of components.

5. Learning Curve

Angular
Angular has a steeper learning curve compared to React. This is partly due to its comprehensive nature and the numerous concepts and tools it introduces. Developers need to familiarize themselves with TypeScript, decorators, dependency injection, and Angular-specific syntax. However, once mastered, Angular provides a robust framework for building large-scale applications.

Key Learning Aspects of Angular

TypeScript: Angular’s preference for TypeScript requires developers to learn a new language, although it offers significant benefits in terms of error checking and code quality.
Angular CLI: A powerful tool for scaffolding, building, and managing Angular applications. Learning to use the CLI effectively can greatly enhance productivity.
Templates and Directives: Angular’s templating syntax and use of directives (e.g., ngIf, ngFor) require a learning period.
Dependency Injection: Understanding Angular’s DI system is crucial for managing services and promoting code reuse.
Angular Modules: Learning how to structure an application using Angular’s module system can be challenging but is essential for scalability and maintainability.

React
React is generally considered easier to learn, especially for developers with a background in JavaScript. Its API is smaller, and the core concepts are straightforward. However, as applications grow, developers may need to learn additional libraries and tools for state management, routing, and side effects, which can add to the learning curve.

Key Learning Aspects of React

JSX: React’s syntax extension that allows HTML to be written within JavaScript. While it may seem unusual at first, it provides a powerful way to create dynamic UIs.
Components and Props: The basic building blocks of React applications. Understanding how to create and compose components is fundamental.
State and Lifecycle: Managing state within components and understanding lifecycle methods are crucial for building dynamic applications.
Hooks: Introduced in React 16.8, hooks allow functional components to manage state and side effects. Learning hooks is essential for modern React development.
Ecosystem Tools: As React focuses solely on the view layer, developers often need to learn additional tools for state management (e.g., Redux, Context API), routing (e.g., React Router), and side effects (e.g., Redux-Saga, Redux-Thunk).

6. Development Speed

Factors Influencing Angular Development Speed

Angular CLI: Streamlines the development process with commands for generating components, services, modules, and more.
Built-in Features: Angular’s built-in features, such as forms, HTTP client, and routing, reduce the need for third-party libraries.
Code Generation: Angular’s schematics allow for automatic generation of boilerplate code, speeding up repetitive tasks.
Modularity: Angular’s module system promotes organization and reuse of code, which can speed up development in large projects.
Initial Setup: The initial setup and learning curve can slow down development, especially for newcomers to the framework.

React
React’s simplicity and flexibility can lead to faster development, particularly for smaller applications or prototypes. The ability to choose specific tools and libraries allows developers to tailor their development environment to their needs. However, this flexibility can also lead to decision fatigue and inconsistencies in larger teams.

Factors Influencing React Development Speed

Create React App (CRA): A tool for setting up a new React project with a sensible default configuration, reducing the initial setup time.
Component Reusability: React’s component-based architecture promotes reusability, speeding up development by reducing the amount of code that needs to be written.
Third-Party Libraries: The vast ecosystem of third-party libraries can accelerate development by providing ready-made solutions for common tasks.
Flexibility: React’s flexibility allows developers to choose the best tools for their specific needs, potentially speeding up development.
Decision Fatigue: The need to choose and integrate various libraries for state management, routing, and side effects can slow down development, especially for larger teams or projects. web dev

7. Community and Ecosystem

Angular Community and Resources

Official Documentation: Comprehensive and well-maintained documentation that covers all aspects of the framework.
Angular University: A platform offering courses and tutorials on Angular development.
Angular Blogs and Conferences: Numerous blogs and conferences dedicated to Angular, such as ng-conf and AngularConnect.
Third-Party Libraries: A vast array of third-party libraries and tools, such as Angular Material, NGXS, and more.

React
React’s community is one of its greatest strengths. Facebook’s continued investment in React ensures it remains a top choice for web development. The ecosystem around React is vast, with numerous state management libraries (like Redux and MobX), UI component libraries (like Material-UI and Ant Design), and tools for testing and deployment. The flexibility of React’s ecosystem allows developers to find solutions tailored to their specific needs.

React Community and Resources

Official Documentation: Detailed and well-maintained documentation that covers the core concepts and advanced topics.
React Training: Platforms offering courses and tutorials on React development, such as React Training and Frontend Masters.
React Blogs and Conferences: Numerous blogs and conferences dedicated to React, such as React Conf and React Rally.
Third-Party Libraries: A wide range of third-party libraries and tools, such as Redux, MobX, React Router, Material-UI, and more.

8. Tooling and Libraries

Key Angular Tools and Libraries

Angular CLI: A command-line tool for creating, building, and managing Angular applications.
Angular Material: A UI component library that follows the Material Design guidelines.
RxJS: A library for reactive programming using observables, integrated into Angular for handling asynchronous operations.
Angular Universal: A tool for server-side rendering (SSR) of Angular applications.
Protractor: An end-to-end testing framework for Angular applications.
NgRx: A state management library based on Redux principles, tailored for Angular.

React
React’s ecosystem offers a wide range of tools and libraries, allowing developers to pick and choose based on their needs. Create React App (CRA) is a popular tool for setting up a new React project with a sensible default configuration. React’s modularity means developers can easily integrate third-party libraries for routing (React Router), state management (Redux), and side effects (Redux-Saga or Redux-Thunk).

Key React Tools and Libraries

Create React App (CRA): A command-line tool for setting up a new React project with a default configuration.
React Router: A popular library for handling routing in React applications.
Redux: A state management library that provides a predictable state container for JavaScript applications.
MobX: A state management library that uses observables and reactions to manage state.
Material-UI: A UI component library that follows the Material Design guidelines.
Styled Components: A library for styling React components using tagged template literals.
Next.js: A framework for server-side rendering (SSR) and static site generation (SSG) with React.

9. Case Studies

Angular

Gmail: Google’s email service is a prime example of Angular’s capabilities. Angular’s robustness and performance are key to handling the complex interactions and large data sets of Gmail.
Forbes: The media company uses Angular to deliver a fast, responsive user experience across its content-heavy site.
Microsoft Office Online: Microsoft uses Angular for its online suite of office applications, leveraging Angular’s performance and modularity.

React

Facebook: As the creator of React, Facebook naturally uses it extensively throughout its platform, from the main site to sub-applications like Messenger.
Instagram: Another Facebook product, Instagram, uses React to deliver a seamless, dynamic user experience.
Netflix: The streaming giant uses React for its front-end, benefiting from React’s performance and component-based architecture.

If you want to see all the article I invite you to go see here: Angular vs React

The Layout types

Gaetan Gasoline — Wed, 10 Jul 2024 14:03:36 +0000

ScheduleJS features two and (soon three) layouts that you can use for any row of your graphics. This article describes what is a layout, how it is used, and what are the differences between these layouts.

What is a Layout?

A layout is a set of tools used to render your activities. Every layout has its specificities. For example, when you set a row layout to be the ChartLayout, you’re telling your graphics that you want to show the data in two dimensions (time and value), express every value held by an activity in proportion with the other activities’ values, and that you need to create a scale to tell the user what does the vertical dimension means in terms of value for an activity.

The requirements

To ensure their activities meet the requirements and to render their data, layouts require:

Their activities to extend one of the higher-order activity classes (ex: ChartActivity, MutableActivity, …)
The renderer to also extends a higher-order class corresponding to the layout (ex: ChartActivityRender, ActivityBarRenderer, …)

The GanttLayout

The GanttLayout is the default layout type for a row. It is also the most basic layout as it only covers a single dimension: time. To use the GanttLayout, the only attribute you have to provide to the activity is its start and end time. Alternatively, you can use a GanttLayout in combination with a custom ActivityRenderer to design a way for the user to picture the values it holds.

The ChartLayout

The ChartLayout will let you build activities into the form of a histogram. It attaches a specific value to render the activity height based on it. There are two styles of chart layout:

The Charts
The High-Low Charts

The following example shows a High-Low Chart coupled with a regular Chart. The High-Low Chart describes stocks opening and closing values and the spread, while the Chart describes daily volumes.

The AgendaLayout

The AgendaLayout is used to build large rows representing daily activity vertically.

It is only present in our development branch and is not yet available in ScheduleJS 1.3. Expect it to make it soon to production.

Stay tuned for more! Here is a screenshot from our development build:

For the final result, take a look: The Layout types