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Javascript and Firefox

Niels Laughlin

Joined: Apr 04, 2006
Posts: 19
I'm going through the examples in Geary/Horstmann's Core Java Server Faces. I typed Listing 4-1 "javascript/index.jsp" into NetBeans. This program has an embedded javascript function. I made a typo in the javascript. When Firefox came up, nothing happened at all I decided to switch browsers, to IE. When I ran the app again, IE had an icon that you can click in the lower left hand corner that brought up a box that explained the script error. When I corrected the error, the app worked in IE. I then switched back to Firefox, and the app worked.

The problem seems to be that Firefox does not report javascript errors or reports them in a way I couldn't see. Any comments? Is this a known problem?
Ulf Dittmer

Joined: Mar 22, 2005
Posts: 42965
Look in the "Tools" menu for "JavaScript Console". That's where the JavaScript and CSS warnings and errors are listed.
Remko Strating
Ranch Hand

Joined: Dec 28, 2006
Posts: 893
Great thanks for this tip.

I normally program and test my code with FireFox. Only for javascripting errors I went to Internet Explorer.

Now I know where to find these errors within FireFox.

Remko (My website)
SCJP 1.5, SCWCD 1.4, SCDJWS 1.4, SCBCD 1.5, ITIL(Manager), Prince2(Practitioner), Reading/ gaining experience for SCEA,
Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 17410

Alternatively, type in the URL "javascript:" into the browser's URL control.

An IDE is no substitute for an Intelligent Developer.
Richard Green
Ranch Hand

Joined: Aug 25, 2005
Posts: 536
this will come handy

MCSD, SCJP, SCWCD, SCBCD, SCJD (in progress - URLybird 1.2.1)
Eric Pascarello

Joined: Nov 08, 2001
Posts: 15385
install Firebug

Niels Laughlin

Joined: Apr 04, 2006
Posts: 19
Thanks guys, in Firefox it's Tools-->Error Console. I re-introduced my error (a misspelled variable) and there was the error message!

FireBug looks great at first glance. But as I am just starting out I don't want to add another layer just yet--wrestling with NetBeans is bad enough! Thanks again, Niels
I agree. Here's the link:
subject: Javascript and Firefox
jQuery in Action, 3rd edition