javascript - Load youtube player api asynchronously on jquery event - Stack Overflow

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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/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?

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./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?

• javascript
• jquery
• youtube-api

Share Improve this question Follow asked Dec 19, 2012 at 6:53 Pollux KhafraPollux Khafra 86255 gold badges1717 silver badges3333 bronze badges

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2 Answers 2

Sorted by: Reset to default 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./iframe_api";
    var firstScriptTag = document.getElementsByTagName('script')[0];
    firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
});

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./p/youtube-direct-lite/source/browse/static/js/ytdl/player.js

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