WordPress/wp-content/themes/twentytwenty/assets/js/skip-link-focus-fix.js
Sergey Biryukov af7a04318d Twenty Twenty: Add missing documentation for some filters.
Add missing `@since` tags for some functions.

Correct alignment of some `@param` tags.

Follow-up to [46271], [46278], [51304].

See #52628, #53461.
Built from https://develop.svn.wordpress.org/trunk@51322


git-svn-id: http://core.svn.wordpress.org/trunk@50931 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-07-03 09:14:58 +00:00

36 lines
823 B
JavaScript

/**
* File skip-link-focus-fix.js.
*
* Helps with accessibility for keyboard only users.
*
* This is the source file for what is minified in the twentytwenty_skip_link_focus_fix() PHP function.
*
* Learn more: https://git.io/vWdr2
*
* @since Twenty Twenty 1.0
*/
( 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 );
}
}() );