Map.prototype.delete()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The delete() method of Map instances removes the entry specified by the key from this Map.
Try it
const map = new Map();
map.set("bar", "foo");
console.log(map.delete("bar"));
// Expected result: true
// True indicates successful removal
console.log(map.has("bar"));
// Expected result: false
Syntax
js
mapInstance.delete(key)
Parameters
Return value
true if an entry in the Map object has been removed successfully. false if the key is not found in the Map.
Examples
Using delete()
js
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.
Specifications
| Specification |
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| ECMAScript® 2027 Language Specification # sec-map.prototype.delete |
Browser compatibility
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