Load youtube player api asynchronously on jquery event

Question

I need to load the youtube iframe player with api on a jquery change event but it only shows how to load it when the script is loaded.

This is the script they use to load the player with the api.

  var tag = document.createElement('script');
  tag.src = "//www.youtube.com/iframe_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

  // 3. This function creates an <iframe> (and YouTube player)
  //    after the API code downloads.
  var player;
  function onYouTubeIframeAPIReady() {
    player = new YT.Player('player', {
      height: '390',
      width: '640',
      videoId: 'u1zgFlCw8Aw',
      events: {
        'onReady': onPlayerReady,
        'onStateChange': onPlayerStateChange
      }
    });
  }

I need to wait to fire this until my change event is fired so inside this..

 $(document).on("change","#yt-url", function() {
     youtubeUrl = $(this).val();
     youtubeId = youtube_parser(youtubeUrl);
     // Load the youtube player with api
 });

What's the correct way to do this?

vyakhir · Accepted Answer · 2012-12-19 08:39:25Z

4

I think you'd just need to encapsulate the code creating the player into a function, which is called only by given event

$(document).on("change","#yt-url", function() {
    var tag = document.createElement('script');
    tag.src = "//www.youtube.com/iframe_api";
    var firstScriptTag = document.getElementsByTagName('script')[0];
    firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
});

answered Dec 19, 2012 at 8:39

vyakhir

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Comments

Jeff Posnick · Accepted Answer · 2012-12-19 17:50:06Z

3

Dmitry's example works, but I've got two modifications. First, check to see if the API is already loaded (whether YT.Player is defined) and only load the API if it isn't. Second, you might as well use $.getScript() since you mentioned you're using jQuery.

There's an example of this approach at https://code.google.com/p/youtube-direct-lite/source/browse/static/js/ytdl/player.js

answered Dec 19, 2012 at 17:50

Jeff Posnick

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1 Comment

Justin Over a year ago

Nice example, you should add the code to your answer in addition to the link.

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