# Firefox JS Console unusable

**URL:** <https://www.ruby-forum.com/t/firefox-js-console-unusable/58312>\
**Category:** Rails\
**Created:** [April 20, 2006, 3:12pm UTC](https://www.ruby-forum.com/t/firefox-js-console-unusable/58312 "2006-04-20T15:12:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nuno](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/65b543/32.png) [@nuno](https://www.ruby-forum.com/u/nuno)\
**Post date:** [April 20, 2006, 3:12pm UTC](https://www.ruby-forum.com/t/firefox-js-console-unusable/58312/1 "2006-04-20T15:12:30Z")

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Hello, I wonder if somebody else is experiencing the same problem :  
Firefox’s Javascript console is unusable with RJS or Scriptaculous  
libraries.  
Every time I want to use it for debugging purpose (evaluating $ or $$  
calls for example) I get a message stating that a script on the page  
must be stopped. If I stop that ‘script’ (which script it is ?) the  
console is responsive but I can’t evaluate nothing (seems like Prototype  
is gone away from scope), and if I don’t stop it the console stay frozen

I really need to investigate some RJS/Ajax/Scriptaculous/Prototype piece  
of code, how can I do ?

I’ve tried disabling almost all the extensions of FF, without success

Thanks

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<div class="post-metadata">

**Author:** ![nuno](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/65b543/32.png) [@nuno](https://www.ruby-forum.com/u/nuno)\
**Post date:** [April 20, 2006, 4:49pm UTC](https://www.ruby-forum.com/t/firefox-js-console-unusable/58312/2 "2006-04-20T16:49:51Z")

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Get the firebug extension, or my new favorite tool  
[JavaScript Shell](http://www.squarefree.com/shell/) a javascript console bookmarklet  
with tab completion, and command history. There’s also a fullblown  
javascript debugger extension, venkeman.

joshua

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<div class="post-metadata">

**Author:** ![nuno](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/65b543/32.png) [@nuno](https://www.ruby-forum.com/u/nuno)\
**Post date:** [April 21, 2006, 1:20am UTC](https://www.ruby-forum.com/t/firefox-js-console-unusable/58312/3 "2006-04-21T01:20:19Z")

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Fine ! Thanks a lot - Firebug is really GREAT compared to original  
console !