Primitives and Objects in JavaScript

 // nn bb ss u -> Primitive Data types in JS

//n = null, n = number, b = boolean, b = bigInt, s = string, s = symbol, u = undefined

let a = null;

let b = 345;

let c = true;   //can also be false

let d = BigInt("567") + BigInt("3");

let e = "Harry"

let f = Symbol("I am a nice symbol")

let g = undefined

let h

console.log(a, b, c, d, e, f, g, h)

console.log(typeof a, typeof b, typeof c, typeof d, typeof e, typeof f, typeof g, typeof h)

console.log(typeof d)

//Objects in JS

//Objects are Non Primitive Data types in JS

const item = {

    "Harry": true,

    "Shubh": false,

    "Lovish": 67,

    "Rohan": undefined

}

console.log(item["Harry"])

console.log(item["sdf"])

OUTPUT :

null 345 true 570n Harry Symbol(I am a nice symbol) undefined undefined object number boolean bigint string symbol undefined undefined bigint true undefined