The add()
method appends a new element with a specified value
to the end of a Set
object.
Syntax
mySet.add(value);
Parameters
- value
- Required. 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
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Set.prototype.add' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'Set.prototype.add' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 38 | 12 | 13 | 111 | 25 | 8 |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 38 | 38 | 12 | 14 | 11 | 25 | 8 |
1. Returns 'undefined' instead of the 'Set' object.
See also
Document Tags and Contributors
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Contributors to this page:
fscholz,
jameshkramer,
nmve,
kdex,
SphinxKnight,
kyliau,
Davidpsjunior,
realityking,
ziyunfei
Last updated by:
fscholz,