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map.get

The get() method returns a specified element from a Map object. If the value that is associated to the provided key is an object, then you will get a reference to that object and any change made to that object will effectively modify it inside the Map object.

Syntax

myMap.get(key)

Parameters

key
The key of the element to return from the Map object.

Return value

The element associated with the specified key, or undefined if the key can't be found in the Map object.

Examples

Using get()

let myMap = new Map();
myMap.set('bar', 'foo');

myMap.get('bar');   // Returns "foo"
myMap.get('baz');   // Returns undefined

Specifications

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
get 38 12 13 11 25 8
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
get 38 38 14 25 8 3.0
Server
Node.js
get 0.12
0.12
0.10
Disabled
Disabled From version 0.10: this feature is behind the --harmony runtime flag.

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/get