Method 5 : Map Objects
In JavaScript, a Map object holds key-value pairs, allowing any type of key, unlike objects. It maintains order and provides methods for manipulation and retrieval.
Syntax:
let map1 = new Map();
Example: Here is thew basic example of map object.
Javascript
let map1 = new Map(); map1.set( "FirstName" , "Rohit" ); map1.set( "LastName" , "Sharma" ); map1.set( "website" , "w3wiki" ); console.log(map1); |
Output
Map(3) { 'FirstName' => 'Rohit', 'LastName' => 'Sharma', 'website' => 'w3wiki' }
JS 2015 or ECMAScript 6 (ES6)
JS 2015 (ES6) also known as ECMAScript 6 (ES6), ECMAScript 6 (ES6) is a significant update to JavaScript, introducing arrow functions, classes, template literals, let and const for variable declaration, enhanced object literals, destructuring, and more modern features for better code organization and readability.