transitionend event fires twice

Question

I have the following code and my problem is that the transitionend event is fired twice. I don\'t know what\'s causing this. I suspected the vendor prefixes cau

Answer 1

This is a relatively old question but I thought I'd share my answer:

function OnTransitionEvent() {
    var t,
        el = document.createElement('transitionElement');

    var transitions = {
        'transition'      : 'transitionend',
        'OTransition'     : 'oTransitionEnd',
        'MozTransition'   : 'transitionend',
        'WebkitTransition': 'webkitTransitionEnd'
    };

    for (t in transitions){
        if (el.style[t] !== undefined){
            return transitions[t];
        }
    }
}

var transitionEvent = OnTransitionEvent();

$(document).one(transitionEvent, function() { 
    console.log('done');
});