https://www.uri.edu/wp-content/themes/uri-modern/js/skip-link-focus-fix.js?ver=4.1.8

1/**
2 * File skip-link-focus-fix.js.
3 *
4 * Helps with accessibility for keyboard only users.
5 *
6 * Learn more: https://git.io/vWdr2
7 *
8 */
9
10( function() {
11	const isIe = /(trident|msie)/i.test( navigator.userAgent );
12
13	if ( isIe && document.getElementById && window.addEventListener ) {
14		window.addEventListener(
15			'hashchange',
16			function() {
17				const id = location.hash.substring( 1 );
18
19				if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
20					return;
21				}
22
23				const element = document.getElementById( id );
24
25				if ( element ) {
26					if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
27						element.tabIndex = -1;
28					}
29
30					element.focus();
31				}
32			},
33			false
34		);
35	}
36}() );