JavaScript Map() Constructor

JavaScript Map Exercise

Last Updated : 14 Nov, 2024

In JavaScript, a Map is a built-in collection that holds key-value pairs, where keys can be of any data type, including objects, functions, or primitive types. Maps are particularly useful when you need to associate data with specific keys and ensure fast lookup times for these keys.

JavaScript

let m = new Map([
    ["name", "Sourav"],
    ["age", 23],
    ["job", "Engineer"]
]);
console.log(m);

Output

Map(3) { 'name' => 'Sourav', 'age' => 23, 'job' => 'Engineer' }

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