Remove script from site before being executed

Question

I have a site I'm loading via iframe and it's on the same server. I need to remove a certain script tag before the page inside the iframe is loaded. In order words, intercept and remove the script before it's executed.

I tried

var x = doc.getElementsByTagName('script');
doc.getElementsByTagName('head').removeChild(x);

But this doesn't seem to be able to catch the script before it executes. What other methods or options exist to achieve this objective?

Thanks

Answer 1

I don't think you can stop it from loading in the setup you've described.

However, you can point your iframe to your own server-side script (eg perl, php) which retrieves the URL and strips the script, then return everything else.

Answer 2

<script type="text/plain">
    alert('foo')
</script>