Map.prototype.delete()

BaselineWidely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Thedelete() method ofMap instances removes the specified element from this map bykey.

Try it

const map1 = new Map();map1.set("bar", "foo");console.log(map1.delete("bar"));// Expected result: true// True indicates successful removalconsole.log(map1.has("bar"));// Expected result: false

Syntax

mapInstance.delete(key)

Parameters

key: The key of the element to remove from theMap object.

Return value

true if an element in theMap object existed and has been removed, orfalse if the element does not exist.

Examples

Using delete()

const myMap = new Map();myMap.set("bar", "foo");console.log(myMap.delete("bar")); // Returns true. Successfully removed.console.log(myMap.has("bar")); // Returns false. The "bar" element is no longer present.