JS: Set.prototype.size

By Xah Lee. Date: .

New in ES2015.

set_obj.size → returns the total count of values in set_obj.

// size of set
const s = new Set([4, 5, 6]);
console.log(s.size); // 3

size is a getter property. [see JS: Getter/Setter Properties]

Reference

ECMAScript 2015 §Keyed Collection#sec-get-set.prototype.size

Set Topic

  1. JS: the Set Object Tutorial
  2. JS: Set Union, Intersection, Difference
  3. JS: Set Object
  4. JS: Set.prototype
  5. JS: Set.prototype.forEach
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