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set.add

The add() method appends a new element with a specified value to the end of a Set object.

Syntax

mySet.add(value);

Parameters

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

Return value

The Set object.

Examples

Using the add() method

var mySet = new Set();

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

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

Specifications

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
add 38 12 13 11
11
Returns 'undefined' instead of the 'Set' object.
25 8
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
add 38 38 14 25 8 3.0
Server
Node.js
add 0.12
0.12
0.10
Disabled
Disabled From version 0.10: this feature is behind the --harmony runtime flag.

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/add