The URL API is a component of the URL standard, which defines what constitutes a valid Uniform Resource Locator and the API that accesses and manipulates URLs. The URL standard also defines concepts such as domains, hosts, and IP addresses, and also attempts to describe in a standard way the legacy application/x-www-form-urlencoded MIME type used to submit web forms' contents as a set of key/value pairs....get("page")); } catch (err) { showErrorMessage(err); } For example,...