title: Blocking external JavaScript file
body: <p>I'm building a UserScript and I try to block an external JS script (ckeditor.js) loaded from the HTML code. </p>
  
  <p>It should be easy with "<strong>beforescriptexecute</strong>" but there is a catch: The site use <a href="https://support.cloudflare.com/hc/en-us/articles/200168056-What-does-Rocket-Loader-do-" rel="nofollow">RocketLoader</a> which is a sort of cache for js scripts.</p>
  
  <p>Let me show you the HTML code and the custom Script tag:</p>
  
  <pre><code>&lt;script type="text/rocketscript" data-rocketsrc="ckeditor/ckeditor.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>Since the tag is "custom" "<strong>beforescriptexecute</strong>" event is not able to stop ckeditor.js from running. </p>
  
  <p>Do you know how I can block this script only (from my userscript) <strong>?</strong> </p>