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URLSearchParams: toString() method

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

Note: This method returns the query string without the question mark. This is different from Location.search, HTMLAnchorElement.search, and URL.search, which all include the question mark.

Note: This feature is available in Web Workers

Syntax

toString()

Parameters

None.

Return value

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

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

Specification
URL Standard # urlsearchparams-stringification-behavior

Browser compatibility