`TypeError: $.Tween Is Undefined` In FireFox

I get this error on this page in Firefox, but only sometimes: TypeError: $.Tween is undefined The page worked well for more than 6 month, I haven't changed the code - but strange

Solution 1:

The problem is that you have jQuery included twice,

<script type="text/javascript" src="../lib/jquery/jquery-1.8.3.min_ts_1382746426.js"></script>
...
<script type="text/javascript" src="../lib/jquery/jquery-1.3.2.min_ts_1235084541.js"></script>

and the second, older version, overwrites the first, newer one.

Solution 2:

1. Use one jQuery.
2. Load the jQuery before all jQueryplugins. keep it on top of every other script tag

3. use jQuery document ready to run your code.

   $(function( ){  
       console.log( "ready!" );
   });
   

instead of

(function($) {...})(jQuery);

You have to clean up your code. [[Drop unnecessary parts like if(0){ ...}, move the JSON at top of the file, use the logic in bottom.]] Cleaner code will help you to find and solve issues easily.