This tutorial introduces you to the JavaScript Map object and shows you how to manipulate maps effectively.

Complete JavaScript Map Reference. The reference contains descriptions and examples of all Map Properties and Methods. Map is an ES6 feature (JavaScript 2015). ES6 is fully supported …

Return a new array with the square root of all element values: Multiply all the values in an array with 10: More examples below. map() creates a new array from calling a function for every …

Feb 11, 2025 · A Map is a data structure that stores key-value pairs, where each key is unique. It is similar to an object but has some advantages: Inserts keys in the order they were added. …

Mar 31, 2021 · Instead of manually iterating over the array using a loop, you can simply use the built-in Array.map() method. The Array.map() method allows you to iterate over an array and …

Apr 16, 2025 · A Javascript map is a collection of elements where each element is stored as a Key, value pair. Map objects can hold both objects and primitive values as either key or value.

6 days ago · This section features several tutorials to get you up and running with Maps JavaScript API. Add a map with a marker to a web page using only HTML. Add a map with a …

Jul 8, 2024 · What is Map? A Map in JavaScript is a collection of key-value pairs where keys can be any data type. Unlike objects, keys in a Map maintain insertion order. It provides methods …

Feb 21, 2024 · Map and Set are two JavaScript data structures you can use to store a collection of values, similar to Objects and Arrays. They are specialized data structures that can help you …

In JavaScript, the Map class is a built-in data structure that allows storing key-value pairs, where keys can be of any data type (including objects, functions, and primitives).