https://igda-gasig.org/wp-content/themes/icelander/assets/js/skip-link-focus-fix.js?ver=1.7.6

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 * @package    Icelander
9 * @copyright  WebMan Design, Oliver Juhas
10 *
11 * @since    1.0.0
12 * @version  1.4.0
13 */
14
15( function() {
16
17
18
19
20
21	var
22		is_webkit = navigator.userAgent.toLowerCase().indexOf( 'webkit' ) > -1,
23		is_opera  = navigator.userAgent.toLowerCase().indexOf( 'opera' )  > -1,
24		is_ie     = navigator.userAgent.toLowerCase().indexOf( 'msie' )   > -1;
25
26	if ( ( is_webkit || is_opera || is_ie ) && document.getElementById && window.addEventListener ) {
27		window.addEventListener( 'hashchange', function() {
28
29			var
30				id = location.hash.substring( 1 ),
31				element;
32
33			if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
34				return;
35			}
36
37			element = document.getElementById( id );
38
39			if ( element ) {
40				if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
41					element.tabIndex = -1;
42				}
43
44				element.focus();
45			}
46
47		}, false );
48	}
49
50
51
52
53
54} )();