console.log("Hello World"); console.log("Todays Class is Javascript Basic");

var a = '10'; // '' - string var b = 20; // - number

console.log(a + b) // 30 "10" + 20 => 1020 // output

// single value store // multi values store // Primitive Data Types - single value store /*

1.string - ''// "" 2.number - 1 to 12334455567890

3.boolean - true / false // task 4.null - by default null 5.undefined - by default will assign as undefined */

/* Keywords es5 - var es6 - let,const */ // String var name ="koti"; var designation = 'Developer';

console.log(name); console.log(designation);

console.log(typeof(name)); // checking on type of variable console.log(typeof(designation));//checking on type of variable

// Number // 1 to 40404040404 floating value => 777.45

var age = 30;

console.log(age); console.log(typeof(age));

var amount = 22000.35; // floating number // float console.log(amount); console.log(typeof(amount));

// Null

var nullKeyword = null;

console.log(nullKeyword); console.log(typeof(nullKeyword));

// undefined

var a; console.log(a); a =10; console.log(a);

// non-primtive Date types - multi values store /*

1. array 2.object */