title: forbid javascript in html file
body: <p>Following problem:
  I've given a file with HTML inside but also maybe some script code.</p>
  
  <p>Now I want to edit the file so that no script gets executed when opening the file with a browser.</p>
  
  <p>My question is: What do I have to do?
  Which possibilities are there to place a script inside HTML to let it get executed? I know there is the script tag, you could also do it with an iframe but what else is possible?</p>
  
  <p>I definitely want to prevent any kind of script execution. How can I achieve this?</p>