`Map.prototype.delete()`

Removes a key and its value from a Map.

Since ES2015 (ES6) Spec ↗

Syntax

map.delete(key)

boolean — `true` if the key existed and was removed, otherwise `false`.

const m = new Map([["a", 1], ["b", 2]]);
console.log(m.delete("a"));
console.log(m.has("a"));

Output

true
false

const m = new Map();
console.log(m.delete("nope"));

Output

false

- Returns a boolean indicating whether anything was removed. - To remove all entries use `map.clear()`.