JS: Set.prototype.add

By Xah Lee. Date: . Last updated: .

New in ES2015.

set_obj.add (value)

Add value to the set set_obj.

Return the modified set.

// create a set, add value to it
const s = new Set();
s.add ("6");
s.add ("5");
s.add ("6");

// the set is modified
console.log(s);
// Set { '6', '5' }

console.log( s.add ("7"));
// Set { '6', '5', '7' }
// the method “add” returns the modified set

Reference

ECMAScript 2015 §Keyed Collection#sec-set.prototype.add

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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