javascript instance method
Map.prototype.delete()
The delete() method of Map instances removes the entry specified by the key from this Map.
Interactive exampleOpen the canonical MDN source to run this embedded demo.
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
mapInstance.delete(key)
Parameters
key- : The key of the entry to remove from the
Mapobject. Object keys are compared by reference, not by value.
- : The key of the entry to remove from the
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()
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
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.