diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-content/themes/twentyseventeen/assets/js/skip-link-focus-fix.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wp/wp-content/themes/twentyseventeen/assets/js/skip-link-focus-fix.js Mon Oct 14 17:39:30 2019 +0200 @@ -0,0 +1,31 @@ +/** + * File skip-link-focus-fix.js. + * + * Helps with accessibility for keyboard only users. + * + * Learn more: https://git.io/vWdr2 + */ +(function() { + var isIe = /(trident|msie)/i.test( navigator.userAgent ); + + if ( isIe && document.getElementById && window.addEventListener ) { + window.addEventListener( 'hashchange', function() { + var id = location.hash.substring( 1 ), + element; + + if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) { + return; + } + + element = document.getElementById( id ); + + if ( element ) { + if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) { + element.tabIndex = -1; + } + + element.focus(); + } + }, false ); + } +})();