Set.prototype.add()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The add() method of Set instances inserts a new element with a specified value in to this set, if there isn't an element with the same value already in this set

Try it

Syntax

add(value)

Parameters

value: The value of the element to add to the Set object.

Return value

The Set object with added value.

Examples

Using the add() method

const mySet = new Set();

mySet.add(1);
mySet.add(5).add("some text"); // chainable

console.log(mySet);
// Set [1, 5, "some text"]

Specifications

Specification
ECMAScript Language Specification # sec-set.prototype.add

Browser compatibility

	Desktop					Mobile						Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	Deno	Node.js
`add`	38	12	13	25	8	38	14	25	8	3.0	38	1.0	0.12.0