skip-link-focus-fix.js

js goodadvicebooks.nl collected 2026-09-27 10:25:50 UTC 834 bytes, 31 lines download raw bytes

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

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