Forem: Dovud Husanov

It's live 🥹

Dovud Husanov — Mon, 03 Nov 2025 06:01:34 +0000

it’s official.

my app just went live on the App Store 🚀

meet Balanz AI — Money tracker.

https://apps.apple.com/us/app/balanz-ai-money-tracker/id6753617125

10 ReactJS quizzes

Dovud Husanov — Mon, 01 May 2023 08:02:42 +0000

If you want to import just the Component from the React library, what syntax do you use?

☑️ import React.Component from 'react'
☑️ import [ Component ] from 'react'
☑️ import Component from 'react'
✅ import { Component } from 'react'

If a function component should always render the

same way given the same props, what is a simple performance optimization available for it?

✅ Wrap it in the React.memo higher-order component.
☑️ Implement the useReducer Hook.
☑️ Implement the useMemo Hook.
☑️ Implement the shouldComponentUpdate lifecycle method.

How do you fix the syntax error that results from running this code?

const person =(firstName, lastName) => { first: firstName, last: lastName } console.log(person("Jill", "Wilson"))

✅ Wrap the object in parentheses.
☑️ Call the function from another file.
☑️ Add a return statement before the first curly brace.
☑️ Replace the object with an array.

If you see the following import in a file, what is being used for state management in the component?

import React, {useState} from 'react';

✅ React Hooks
☑️ stateful components
☑️ math
☑️ class components

Using object literal enhancement, you can put values back into an object. When you log person to the console, what is the output?

const name = 'Rachel'; const age = 31; const person = { name, age }; console.log(person);

☑️ {{name: "Rachel", age: 31}}
✅ {name: "Rachel", age: 31}
☑️ {person: "Rachel", person: 31}}
☑️ {person: {name: "Rachel", age: 31}}

What is the testing library most often associated with React?

☑️ Mocha
☑️ Chai
☑️ Sinon
✅ Jest

To get the first item from the array ("cooking") using array destructuring, how do you adjust this line?

const topics = ['cooking', 'art', 'history'];

☑️ const first = ["cooking", "art", "history"]
☑️ const [] = ["cooking", "art", "history"]
☑️ const [, first]["cooking", "art", "history"]
✅ const [first] = ["cooking", "art", "history"]

How do you handle passing through the component tree without having to pass props down manually at every level?

☑️ React Send
☑️ React Pinpoint
☑️ React Router
✅ React Context

What should the console read when the following code is run?

const [, , animal] = ['Horse', 'Mouse', 'Cat']; console.log(animal);

☑️ Horse
✅ Cat
☑️ Mouse
☑️ undefined

What is the name of the tool used to take JSX and turn it into

createElement calls?

☑️ JSX Editor
☑️ ReactDOM
☑️ Browser Buddy
✅ Babel

https://dovudhon.com
https://github.com/dovudhonhusanov

What are some reasons why JavaScript is currently one of the most popular programming languages?

Dovud Husanov — Tue, 25 Apr 2023 07:36:23 +0000

Versatility: JavaScript can be used for a wide range of tasks, from front-end web development to server-side programming to mobile app development.

Accessibility: JavaScript can be run in any modern web browser without requiring any additional setup or installations.

Large community and resources: JavaScript has a massive community of developers who share their knowledge and build open source tools and libraries to help other developers. This makes it easy to find resources and get help with any issues you may encounter.

Easy to learn: JavaScript is a relatively easy language to learn, with a simple syntax and a low barrier to entry.

Interactivity: JavaScript allows developers to create dynamic and interactive web pages that respond to user input, making the web experience more engaging for users.

Continual development: JavaScript is constantly evolving, with new features and capabilities being added on a regular basis, ensuring that it remains a relevant and useful programming language.