Handling HTML5 audio/video with jQuery promises

html5_audio_promises.js

// This function plays an audio/video element and creates a promise
// that resolves when the audio/video finishes playing
// It's nice :)

function HTML5Play(target){
  var t = $(target);
  if(t.length != 1 || !t.is('audio, video')) return undefined; //These are invalid cases
  
  var deferred = new $.Deferred();
  t.on('ended', function(){ deferred.resolve(t) })
  t[0].play()
  return deferred.promise()
}