tut-2.js

//  1) camelCase
//  2) kebab-case
//  3) snake_case
//  4) PascalCase
var name="Vibhor"
console.log(name);
// var has global scope
var value=1;
console.log(value);
// var can have any value like string, number, boolean, undefined etc.
const val=10;
console.log(val);
// const value cannot be changed val =1;
{
    let value=10;
    console.log(value);
    //let has local scope 
}

//  Primitve Data Types:
//  1) Strings
//  2) Numbers 
//  3) Boolean 
//  4) NULL 
//  5) Undefined 
//  6) Symbol
// Refrence Data Types:
// 1) Arrays
// 2) Object Literals
// 3) Functions 
// 4) Dates