JavaScript-Folder/DataTypesSummary.html at main · researcher-program/JavaScript-Folder · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>  Data Types  Summary   | JavaScript | Al- Arafat </title>
</head>
<body>
    <H1> Assalamualaikum Or-Rohmatullah </H1>
    <H2> Al -  Arafat </H2>
</body>
<script src="DataTypesSummary.js"></script>
<script src="test-5.js"></script>
<script>
    // Type-1:
/*
               DataType has 2 type:
i.Primitive ;
ii.Non-Primitive.

DataType defines as how to store in memory ,and how to access data in memory.

i.primitive: call by Value
   7 types :
String,
Number,
Boolean,
Null,
Undefined,
Symbol,
BigInt

ii.Non-Primitive:call by reference
Arrays,Objects,Functions

Js is a Dynamic Language,Not Static Languages.
*/
/*
const score = 100
const scoreValue = 100.3

const isLoggedIn = false
const outsideTemp = null
let userEmail; // let userEmail = undefined   //same

const id = Symbol("1252")
const anotherId = Symbol("1252")
// console.log(id === anotherId); // False => are not same
const bigNumber = 3545344254236n
*/
</script>

</html>