https://seo.ua/sites/all/themes/zen/js/classie.js?tk9qxs

1/*!
2 * classie - class helper functions
3 * from bonzo https://github.com/ded/bonzo
4 *
5 * classie.has( elem, 'my-class' ) -> true/false
6 * classie.add( elem, 'my-new-class' )
7 * classie.remove( elem, 'my-unwanted-class' )
8 * classie.toggle( elem, 'my-class' )
9 */
10
11/*jshint browser: true, strict: true, undef: true */
12/*global define: false */
13
14( function( window ) {
15
16    'use strict';
17
18// class helper functions from bonzo https://github.com/ded/bonzo
19
20    function classReg( className ) {
21        return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
22    }
23
24// classList support for class management
25// altho to be fair, the api sucks because it won't accept multiple classes at once
26    var hasClass, addClass, removeClass;
27
28    if ( 'classList' in document.documentElement ) {
29        hasClass = function( elem, c ) {
30            return elem.classList.contains( c );
31        };
32        addClass = function( elem, c ) {
33            elem.classList.add( c );
34        };
35        removeClass = function( elem, c ) {
36            elem.classList.remove( c );
37        };
38    }
39    else {
40        hasClass = function( elem, c ) {
41            return classReg( c ).test( elem.className );
42        };
43        addClass = function( elem, c ) {
44            if ( !hasClass( elem, c ) ) {
45                elem.className = elem.className + ' ' + c;
46            }
47        };
48        removeClass = function( elem, c ) {
49            elem.className = elem.className.replace( classReg( c ), ' ' );
50        };
51    }
52
53    function toggleClass( elem, c ) {
54        var fn = hasClass( elem, c ) ? removeClass : addClass;
55        fn( elem, c );
56    }
57
58    var classie = {
59        // full names
60        hasClass: hasClass,
61        addClass: addClass,
62        removeClass: removeClass,
63        toggleClass: toggleClass,
64        // short names
65        has: hasClass,
66        add: addClass,
67        remove: removeClass,
68        toggle: toggleClass
69    };
70
71// transport
72    if ( typeof define === 'function' && define.amd ) {
73        // AMD
74        define( classie );
75    } else {
76        // browser global
77        window.classie = classie;
78    }
79
80})( window );