URL.canParse()

The URL.canParse() static method of the URL interface returns a boolean indicating whether or not an absolute URL, or a relative URL combined with a base URL, are parsable and valid.

This is a fast and easy alternative to constructing a URL within a try…catch block. It returns true for the same values for which the URL() constructor would succeed, and false for the values that would cause the constructor to throw.

Inputs: url A string or any other object with a stringifier — including, for example, an a or area element — that represents an absolute or relative URL. If url is a relative URL, base is required, and will be used as the base URL. If url is an absolute URL, a given base will be ignored. base A string representing the base URL to use in cases where url is a relative URL. If not specified, it defaults to undefined.