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The clear() method removes all elements from a Map object.
Syntax
myMap.clear();Return value
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 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 |