Find Missing Javascript Includes in Website

Question

Say I have several JavaScript includes in a page:

<script type="text/javascript" src="/js/script0.js"></script>
<script type="text/javascript" src="/js/script1.js"></script>
<script type="text/javascript" src="/js/script2.js"></script>
<script type="text/javascript" src="/js/script3.js"></script>
<script type="text/javascript" src="/js/script4.js"></script>

Is there a way i can tell if any of those weren't found (404) without having to manually check each one? I guess i'm looking for an online tool or something similar. Any ideas?

Answer 1

If you get the Firebug firefox plugin and enable the consoles it should tell you when there are errors retrieving resources in the console.

Answer 2

I don't use other browsers enough to know where to find a similar feature in them, but Safari has an Activity window that displays all of the included files for a given web page and which ones were unable to be retrieved.