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Dec 8, 2025 · The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) may be used as either a key or a value.

Jul 23, 2025 · Unlike objects, Map keys can be of any data type (primitive or object), and they maintain the order of insertion. Below is a detailed overview of the most commonly used methods available …

A Map is a built in object that holds key-value pairs. It can hold a key of any data type unlike in plain objects. It maintains the insertion order and provides helpers to manage key-value pairs.

Nov 14, 2022 · Map is a collection of keyed data items, just like an Object. But the main difference is that Map allows keys of any type. Methods and properties are: new Map() – creates the map. …

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

Mar 16, 2023 · You can use the new keyword along with the Map() constructor to create a new Map object in JavaScript. The Map object is a built-in data structure that allows you to store key-value …

A JavaScript Map is an object that can store collections of key-value pairs, similar to a dictionary in other programming languages. Maps differ from standard objects in that keys can be of any data type.

Learn how to create maps in JavaScript using new Map (). Explore adding key-value pairs, initializing from arrays, and practical examples for map usage.

Sep 23, 2025 · A JavaScript Map holds key-value pairs and similar to Hash Map or Dictionary in other languages. Preserves the original insertion order. Supports any type, including objects and …