JavaScript: Map.prototype.delete

By Xah Lee. Date: . Last updated: .

New in ES2015.


Deletes the entry of key.

Returns true if found, else false.

var m = new Map([[3, "n3"], [4, "n4"], [5, "n5"] ]);

// delete a entry. return true if found
console.log(m.delete(5)); // true

console.log(m.delete(99)); // false

console.log(m); // Map { 3 => 'n3', 4 => 'n4' }


ECMAScript 2015 §Keyed Collection#sec-map.prototype.delete

Map Topic

  1. JavaScript: the Map Object Tutorial
  2. JavaScript: Map Object
  3. JavaScript: Map.prototype
  4. JavaScript: Iterate Over Map Object
  5. JavaScript: Convert Object to Map Data Type
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