What is the usage of Map in JavaScript ES6?

What is the usage of Map in JavaScript ES6?

In JavaScript ES6, a Map is a collection of key-value pairs where keys can be of any type. It's useful for storing data that needs to be accessed by keys.

Can you give me an example of how to create a Map?

Sure! You can create a Map using the Map constructor. For example:

let myMap = new Map();
myMap.set('key1', 'value1');
myMap.set('key2', 'value2');

How do I retrieve a value from a Map?

You can retrieve a value using the get method. For example:

let value = myMap.get('key1'); // returns 'value1'

What are the advantages of using Map over plain objects?

Maps maintain the insertion order of keys, allow any type of keys, and provide better performance for frequent additions and removals.