javascript - Jquery event for changing an element's class attribute -

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i need execute jquery code when element's class attribute changed. example, element : <div class="my-class">. so, when new class added div, (i.e. <div class="my-class new-class">, have trigger jquery code.

how do in jquery? there event attribute change?

if have absolutely no means of telling when external function changes class (like, custom event, example), have this:

$(document).ready(function(){      // cache required element     window.elementinquestion = $('#element-that-changes-class');      function checkclass(){         if (window.elementinquestion.hasclass('new-class')) {             // trigger custom event             $(document).trigger('elementhasclass');              // if need check until first time class appears             // can cancel further checks here             clearinterval(window.classcheckerinterval);         }     }      // check if element has class every once in while     window.classcheckerinterval = setinterval(checkclass, 100);      $(document).bind('elementhasclass', function(){         // handler here     }); });

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