Twitch embed script throwing undefined error on webpage

Other Questions Twitch
1

I keep running into this annoying problem where I get ReferenceError: Twitch is not defined when trying to embed a Twitch stream on my website. Here’s the code I’m using:

<div class="stream-container" id="playerWrapper">
    <script src="https://player.twitch.tv/js/embed/v1.js"></script>
    <div id="streamDiv"></div>
    <script type="text/javascript">
        var settings = {width:800,height:450,channel:"gamingStreamer123"};
        var streamPlayer = new Twitch.Player("streamDiv", settings);
        streamPlayer.setVolume(0.3);
    </script>
</div>

The weird thing is that when I test this exact same code in online editors like JSFiddle, everything works perfectly fine. But when I put it on my actual website, it throws that Twitch undefined error. I can see the embed script is loading properly in the browser dev tools under the network tab.

Using a simple iframe embed works without issues, but I need the JavaScript API for more control over the player. Has anyone dealt with this before? What could be blocking the Twitch object from being available on my page?

2

Check your content security policy headers and ad blockers - they might be blocking the external script. I had this exact problem when my CSP blocked script-src from Twitch domains. The script loaded fine, but the Twitch object wouldn’t initialize. Also make sure no JavaScript errors happen before your Twitch code runs - broken scripts can mess up everything that loads after them. Wrap your Twitch initialization in a try-catch block and log the errors to see what’s going on. For me, adding the right CSP directives for twitch.tv domains fixed the undefined reference instantly.

3

This happens because the Twitch embed script loads asynchronously. JSFiddle and other environments can mess with the timing. You need to wait for the Twitch object to fully load before running your initialization code. Try listening for the window load event or add a short setTimeout to delay your Twitch player code. I had the same issue and fixed it by moving the script to the bottom of the body tag and using a small timeout to let everything load properly.