JS: Map.prototype.delete

By Xah Lee. Date: . Last updated: .

New in ES2015.


Deletes the entry of key in map_obj.

Return true if found, else false.

const 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' }

JS Map

  1. the Map Object Tutorial
  2. Iterate Over Map Object
  3. Convert Object to/from Map
  4. Map Filter
  5. Reverse Key/Value

Like it? Help me by telling your friends. Or, Put $5 at patreon.

Or, Buy JavaScript in Depth

If you have a question, put $5 at patreon and message me.

Web Dev Tutorials