Forem: Jarvis-3000

Question about localstorage in JavaScript.

Jarvis-3000 — Tue, 07 Jul 2020 17:29:33 +0000

Hey guys,
I want to know that,
As we use localstorage in JavaScript for store the data at client-side.

So, can we do the same thing for mobile like android?

Can we use localstorage in android?

Jarvis-3000 — Fri, 03 Jul 2020 16:31:58 +0000

We all must have seen that in some websites we can't copy, paste, or cut.

Go through below document
You will crack it.

Jarvis-3000 — Tue, 30 Jun 2020 12:26:07 +0000

Almost all programming languages have a concept of semicolon, but in javascript, it is in different manner.

We think that ";" is optional in JS, but it is not like that.

If we don't put ";" at the end of the statement, the ASI concept of JS will automatically insert ";" but not places in source code.

BUT,
In JS at certain places, it is mandatory to put semicolons manually otherwise the program will go wrong.

Semicolons and "Automatic Semicolon Insertion" are two of the most misunderstood topics in JavaScript.

For more deeply knowledge go to below link

Jarvis-3000 — Tue, 26 May 2020 11:22:31 +0000

A very important and confusing thing

//Function declarations load before any code execution
function foo() { return 5; }

//Anonymous function expression
//Load only when the interpreter reaches that line
var foo = function() { return 5; }

//Named function expression
var foo = function foo() { return 5; }

//Example: Function Expression

      alert(foo());    // ERROR! foo wasn't loaded yet
      var foo = function() { return 5; }

//Example: Function Declaration

      alert(foo());    // Alerts 5. loaded before any code can run.
      function foo() { return 5; }