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The append() method of the URLSearchParams interface appends a specified key/value pair as a new search parameter.

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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
appendChrome Full support 49Edge Full support 17Firefox Full support 29IE No support NoOpera Full support 36Safari Full support YesWebView Android Full support 49Chrome Android Full support 49Edge Mobile No support NoFirefox Android Full support 29Opera Android Full support 36Safari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support

See also

Etiquetas do documento e colaboradores

Colaboradores desta página: mdnwebdocs-bot, chrisdavidmills, fscholz, jpmedley, rolfedh
Última atualização por: mdnwebdocs-bot,