The clear() method removes all elements from a Map object.

Syntax

myMap.clear();

Return value

undefined.

Examples

Using the clear method

var myMap = new Map();
myMap.set('bar', 'baz');
myMap.set(1, 'foo');

myMap.size;       // 2
myMap.has('bar'); // true

myMap.clear();

myMap.size;       // 0
myMap.has('bar')  // false

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Map.prototype.clear' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Map.prototype.clear' in that specification.
Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support38121911258
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support38381219258 ?

See also

Document Tags and Contributors

 Contributors to this page: wbamberg, fscholz, jameshkramer, nmve, kdex, eduardoboucas, realityking
 Last updated by: wbamberg,