detect and suppress errors loading javascript file

Question

I want to source a javascript file from facebook http://connect.facebook.net/en_US/all.js

The organization I work for has a firewall that blocks access to Facebook, it just goes to an html page that says "Access Denied blah blah blah"

I want to be able to put a javascript src tag <script src="http://... "> </script> and detect and suppress the warnings when the browser tries to evaluate the html as javascript.

Anyone know how?

Answer 1

Looks like jQuery.getScript is what you need as was mentioned. Or you can manually execute:

$.ajax({
  url: url,
  dataType: 'script',
  success: function(){document.write('<script src="http://... "> </script>');}
});

And append your html on successful load with the <script></script> tag.

Answer 2

With the standard <script> tag, not possible. There's nothing really running at the time when the script's src is hit and content downloaded, so you can't wrap that in a try/catch block. There's some tips here on how to dynamically load scripts. Maybe the browsers will add some stuff to the DOM element created there which you can check for.