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Map.prototype.delete() - JavaScript | MDN
Map.prototype.delete() Baseline Widely available
The delete()
method of Map
instances removes the specified element from this map by
key.
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
key
The key of the element to remove from the Map
object.
true
if an element in the Map
object existed and has been removed, or
false
if the element does not exist.
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.