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.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic Support38121911257.1
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support3838121911258

See also

Document Tags and Contributors

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