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01_dataType.js

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"use strict"; // treate all js code as newer version

// premetive datatypes

let name = "Sayantan Karan" // string

let age = 21 // number

let isLoggedIn = false // boolean

let state; // undefined

let bigNum = 83984789309893878n // bigint

let outSideTemp = null // null(standalone value)(type == object)

let id = Symbol('123') // symbol(unique used in react)

let anotherId = Symbol('123')

// Non-Premetive

const heros = ["thor", "hulk", "Iron Man"] // Array

let myObj = {

name: "Sayantan", // Object

age : 22

}

const wish = function(){

console.log("Good Morning"); // Functions

}

console.table([name, age, isLoggedIn, state, bigNum, outSideTemp, (id == anotherId)])

// Primitive

// 7types: String, Number, Boolean, null, undefined, Symbol, Bigint

// Reference or non-premetive

// Array, Object, Functions