Rails - Sep 2006 - RJS & ReferenceError

Hello,

is there a way to suppress rjs error messages, because i am trying to check
if some variable is present, with (variable == undefined), but rjs stops
processing and throws out error, because there is >>reference
error<<.
Whatever, this is javascript, you cannot have reference error in
javascript....

BTW: i know i could just create a javascript file, and assign undefined
values to variables, but that would kinda suck.

Thanks for any suggestions.


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Aleksander Pejčić wrote:
> Hello,
> 
> is there a way to suppress rjs error messages, because i am trying to 
> check
> if some variable is present, with (variable == undefined), but rjs stops
> processing and throws out error, because there is >>reference
error<<.
> Whatever, this is javascript, you cannot have reference error in
> javascript....
> 
This isn''t rjs stopping processing, it''s your browser throwing
the
exception while evaluating the javascript (which just happens to be 
created via rjs).
see http://www.irt.org/script/778.htm for testing for the presence of a 
variable.

Fred

-- 
Posted via http://www.ruby-forum.com/.

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You must be mistaken...

i have this code:
if(timer == undefined)
timer = setTimeout(\"effect = new
fx.Opacity($(''login_message''),
{duration: 2000, onComplete: function() { timer undefined;}}).toggle();\",
2000);

You can probably see what i am trying to accomplish.

And it work if i use it like a regular javascript, which means putting
it in external .js file or "inlineing" it html file, but when i use
this inside rjs file with page << ".." directive, i get rjs
warnig
about reference error.


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some more fun:

page << " alert(typeof timer); ", messaged that timer is
undefined, and
right after i pressed ok, a new alert popped up whining about rjs
reference error


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Update: (typeof timer == ''undefined'') worked


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