JS: Map.prototype.clear

By Xah Lee. Date: . Last updated: .

New in ES2015.


Deletes all entries of the map map_obj.

Return undefined.

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

// clear map, return undefined
console.log( m.clear() === undefined ); // true

// cleared
console.log(m); // Map {}


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

Map Topic

  1. JS: the Map Object Tutorial
  2. JS: Map Object
  3. JS: Map.prototype
  4. JS: Iterate Over Map Object
  5. JS: Convert Object to/from Map
  6. JS: Map Filter
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