URLSearchParams.toString()

The toString() method of the URLSearchParams interface returns a query string suitable for use in a URL.

Syntax

URLSearchParams.toString()

Parameters

None.

Return value

A DOMString, without the question mark. (Returns an empty string if no search parameters have been set.)

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);
console.log(params.toString());
//Prints 'foo=1&bar=2&foo=4'

// note: params can also be directly created
let url = new URL('https://example.com?foo=1&bar=2');
let params = url.searchParams;

// or even simpler
let params = new URLSearchParams('foo=1&bar=2');

Specifications

Browser compatibility

See also

• The URL interface.
• Google Developers: Easy URL manipulation with URLSearchParams