Up until 1.4 I've been defining custom transitions as explained in this stack overflow post: 

http://stackoverflow.com/questions/20806208/has-no-method-transition-error-with-a-custom-transition-setup-on-jqm-1-4-0/20807365?noredirect=1#comment31214747_20807365

I upgraded to 1.4 recently and now my projects transitions have gone tits up. Being an intermediately skilled programmer at best, considering the answer I got on stack overflow this is what I've gotten so far in trying to rebuild my custom transitions: 

2.       $.mobile.myTransition = function() {
3.         this.init.apply(this, arguments);
4.       };
5. 
   
6.       $.extend($.mobile.myTransition.prototype, $.mobile.Transition.prototype, {
7.         sequential: true,
8. 
   
9.         beforeDoneOut: function() {
10.           console.log('My transition is finally happening')
11.           if ( this.$from ) {
12.             this.cleanFrom();
13.           }
14.         },
15. 
    
16.         beforeStartOut: function( screenHeight, reverseClass, none ) {
17.           this.$from.animationComplete($.proxy(function() {
18.             this.doneOut( screenHeight, reverseClass, none );
19.           }, this ));
20.         }
21.       });
22. 
    
23. 
    
24.       $.mobile.transitionHandlers["myTransition"] = $.mobile.myTransition;
25. 
    
26.       console.log($.mobile.transitionHandlers)
27. 
    

Unfortunately it's not working. How would I go about building custom transitions for the new version of JQM? Any help would be really, really appreciated!!