JavaScript Map set()
Map.set()
You can add elements to a Map with the set() method:
Example
// Create a Map
const fruits = new Map();
// Set Map Values
fruits.set("apples", 500);
fruits.set("bananas", 300);
fruits.set("oranges", 200);
Try it Yourself »
The set() method can also be used to change existing Map values:
Description
The set() method adds an element to a map.
The set() method updates an element in a map.
Syntax
map.set(key, value)
Parameters
| Parameter | Description |
| key | Required. The element key. |
| value | Required. The element value. |
Return Value
| Type | Description |
| Map | The map object. |
Browser Support
map.set() is an ECMAScript6 (ES6) feature.
ES6 (JavaScript 2015) is supported in all modern browsers since June 2017:
| Chrome 51 | Edge 15 | Firefox 54 | Safari 10 | Opera 38 |
| May 2016 | Apr 2017 | Jun 2017 | Sep 2016 | Jun 2016 |
map.set() is not supported in Internet Explorer.
