Lots of warnings with jQuery 1.5
Why does jQuery 1.5 shows so many warnings in Firefox's Error console?
Warnings about:
Functions not always return values?
Test for equality (==) mistyped as assignment (=)?
Reference to undefined prototype?
Reference to undefined property?
This makes a quick debug using the error console a nightmare and to be honest shows problems with the code.
Clean code doesn't show warnings to avoid introduction of errors later on.
If warnings are accepted only to make the code smaller, that's a very bad approach.