The append()
method of the URLSearchParams
interface appends a specified key/value pair as a new search parameter.
As shown in the example below, if the same key is appended multiple times it will appear in the parameter string multiple times for each value.
Note:
This feature is available in Web Workers.Syntax
URLSearchParams.append(name, value)
Parameters
- name
- The name of the parameter to append.
- value
- The value of the parameter to append.
Return value
Void.
Examples
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
BCD tables only load in the browser
See also
- Other URL-related interfaces:
URL
,HTMLHyperlinkElementUtils
. - Google Developers: Easy URL manipulation with URLSearchParams