https://www.yazi-yorum.net/wp-content/themes/grassywp/js/skip-link-focus-fix.js?ver=20151215

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( function() {
9	"use strict";
10	var isIe = /(trident|msie)/i.test( navigator.userAgent );
11
12	if ( isIe && document.getElementById && window.addEventListener ) {
13		window.addEventListener( 'hashchange', function() {
14			var id = location.hash.substring( 1 ),
15				element;
16
17			if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
18				return;
19			}
20
21			element = document.getElementById( id );
22
23			if ( element ) {
24				if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
25					element.tabIndex = -1;
26				}
27
28				element.focus();
29			}
30		}, false );
31	}
32} )();