The delete() method removes the specified element from a Map object.
myMap.delete(key);
keyMap object.true if an element in the Map object existed and has been removed, or false if the element does not exist.
delete methodvar 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.
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Map.prototype.delete' in that specification. | Standard | Initial definition. |
| ECMAScript Latest Draft (ECMA-262) The definition of 'Map.prototype.delete' in that specification. | Draft |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 38 | 12 | 13 | 11 | 25 | 8 |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | 38 | 38 | 12 | 14 | 25 | 8 | Yes |
| Server | |
|---|---|
| Node.js | |
| Basic support | 0.12
|
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/delete