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. */
    11. /*jshint browser: true, strict: true, undef: true */
    12. /*global define: false */
    14. ( function( window ) {
    16. 'use strict';
    18. // class helper functions from bonzo https://github.com/ded/bonzo
    20. function classReg( className ) {
    21.  return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
    22. }
    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;
    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. }
    53. function toggleClass( elem, c ) {
    54.  var fn = hasClass( elem, c ) ? removeClass : addClass;
    55.  fn( elem, c );
    56. }
    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. };
    71. // transport
    72. if ( typeof define === 'function' && define.amd ) {
    73.  // AMD
    74.  define( classie );
    75. } else {
    76.  // browser global
    77.  window.classie = classie;
    78. }
    80. })( window );