// numbers
var num = 10; // integer
var pi = 3.14; // floating point number

// strings
var firstname = 'Abhishek'; // single quote string
var lastname = "Vishwakarma"; // double quote string
var greeting = `Hi ${firstname}!`; // string with backticks

// boolean
var yes = true; // true
var no = false; // false

// null
var nothing = null; // null value

// undefined;
var someVar; // undefined

// objects
var details = {
  name: 'Abhishek',
  age: 22,
  married: false
};

// arrays
var days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'];