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The delete() method removes the specified element from a Map object.




Required. The key of the element to remove from the Map object.

Return value

Returns true if an element in the Map object existed and has been removed, or false if the element does not exist.


Using the delete method

var 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 2017 Draft (ECMA-262)
The definition of 'Map.prototype.delete' in that specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 38 13.0 (13.0) 11 25 7.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 38 13.0 (13.0) No support No support 8

See also

Document Tags and Contributors

 Contributors to this page: fscholz, Zarel, realityking, ratcliffe_mike
 Last updated by: fscholz,