Map.prototype.delete()

The delete() method removes the specified element from a Map object by key.

Syntax

myMap.delete(key);

Parameters

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

Return value

true if an element in the Map object existed and has been removed, or false if the element does not exist.

Examples

Using delete()

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

myMap.delete('bar'); // Returns true. Successfully removed.
myMap.has('bar');    // Returns false. The "bar" element is no longer present.

Specifications

Specification
ECMAScript (ECMA-262)
The definition of 'Map.prototype.delete' in that specification.
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Map.prototype.delete' in that specification.

Browser compatibility

DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
deleteChrome 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