The canplay/canplaythrough events for an HTML5 video are not called on Firefox. Why?

Question

I\'m building a jQuery plugin for managing HTML5 videos. I\'m trying to capture the canplay and canplaythrough events. In Chrome, the event is fired without problem. In Fire

Answer 1

Even if my question didn't get any attention whatsoever, I think it's a good idea to give an explanation for people who may stumble on this in the future...

The problem is really weird: if the jQuery core is included in the footer, some of the video events do not work. If the jQuery core is included in the head of the document, all events are called correctly.

So the solution is to include the jQuery core in the html head even if "best practices" for optimization recommends placing all script at the end of the body for faster loading times.