"use strict"; // treated as all new js code version 

// alert(3+3) we are using nodejs not brpwser 

console.log(3+3+3);
console.log("tansihq dhingra ");// code readibility is very important 

let name = "tanishq"
let age = 18 
let isLoggedIn = false 

/* primitive 
number = 2 ki power 53
bigint
string = " "
boolean = true/ false 
null = standalone value (value is null )
undefined = not defined 
symbbol = uniqueness in react */

// object 
console.log(typeof undefined );//undefined
console.log(typeof null);//object