JS: Map.prototype.delete

By Xah Lee. Date: . Last updated: .

New in ES2015.

map_obj.delete(key)

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. Map Object
  3. Map.prototype
  4. Iterate Over Map Object
  5. Convert Object to/from Map
  6. Map Filter
Liket it? I spend 2 years writing this tutorial. Help me spread it. Tell 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

  1. HTML
  2. Visual CSS
  3. JS in Depth
  4. JS Object Reference
  5. DOM Scripting
  6. SVG
  7. Blog