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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