Map.prototype.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

Specification
ECMAScript (ECMA-262)
The definition of 'Map.prototype.get' in that specification.

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
getChrome Full support 38Edge Full support 12Firefox Full support 13IE Full support 11Opera Full support 25Safari Full support 8WebView Android Full support 38Chrome Android Full support 38Firefox Android Full support 14Opera Android Full support 25Safari iOS Full support 8Samsung Internet Android Full support 3.0nodejs Full support 0.12
Full support 0.12
Full support 0.10
Disabled
Disabled From version 0.10: this feature is behind the --harmony runtime flag.

Legend

Full support  
Full support
User must explicitly enable this feature.
User must explicitly enable this feature.

See also