This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The append() method of the URLSearchParams interface appends a specified key/value pair as a new search parameter.
Syntax
URLSearchParams.append(name, value)
Parameters
- name
- The name of the parameter to append.
- value
- The value of the parameter to append.
Returns
Void
Example
let url = new URL('https://example.com?foo=1&bar=2');
let params = new URLSearchParams(url.search.slice(1));
//Add a second foo parameter.
params.append('foo', 4);
//Query string is now: 'foo=1&bar=2&foo=4'
Specifications
| Specification | Status | Comment |
|---|---|---|
| URL The definition of 'append()' in that specification. |
Living Standard | Initial definition. |
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.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Chrome Full support 49 | Edge Full support 17 | Firefox Full support 29 | IE No support No | Opera Full support 36 | Safari ? | WebView Android Full support 49 | Chrome Android Full support 49 | Edge Mobile Full support 17 | Firefox Android Full support 29 | Opera Android Full support 36 | Safari iOS ? | Samsung Internet Android ? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
See also
- Other URL-related interfaces:
URL,URLUtils. - Google Developers: Easy URL manipulation with URLSearchParams