The Map JavaScript Data Structure
Discover the Map data structure introduced in ES6 to associate data with keys. Before its introduction, people generally used objects as maps, by associating some object or value to a specific key value. What is a Map A Map data structure allows you to associate data to a key. Before ES6 ECMAScript 6 (also called ES2015) introduced the Map data structure to the JavaScript world, along with Set. Before its introduction, people generally used objects as maps, by associating some object or value to a specific key value:...