Map.prototype.clear()
The clear()
method removes all elements from a Map
object.
Syntax
JavaScript
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myMap.clear();
Return value
Examples
Using the clear
method
JavaScript
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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 2017 Draft (ECMA-262) The definition of 'Map.prototype.clear' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 38 | 19.0 (19.0) | 11 | 25 | 7.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | No support | 38 | 19.0 (19.0) | No support | No support | 8 |
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/map/clear