Syntax

toString()

Parameters

None.

Return value

A string, without the question mark. Returns an empty string if no search parameters have been set. Characters in the application/x-www-form-urlencoded percent-encode set (which contains all code points except ASCII alphanumeric, *, -, ., and _) are percent-encoded, and U+0020 SPACE is encoded as +.

Examples

const url = new URL("https://example.com?foo=1&bar=2");
const params = new URLSearchParams(url.search);
// Add a second foo parameter.
params.append("foo", 4);
console.log(params.toString()); // Prints 'foo=1&bar=2&foo=4'

Specifications

Browser compatibility

See also

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