Rails spinoffs - Feb 2008 - Adding new javascript function using Insertion (or Element.replace)

I''ve got a Rails partial with a javascript function (let''s say
foo)
defined inside.  I''d like to be able to render this partial as part of 
an AJAX response which makes foo available to the rest of the javascript 
on the page.

According to the prototype docs, scripts are evaluated, but I''m not
sure
what that means.  I''ve tested with alert, and the alert box pops up.  
However, with functions, they don''t appear in the generated HTML, and 
cannot be accessed by function calls.

Am I trying something crazy?  Any ideas?

Thanks,
Micah

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Is this a normal function, like function foo(param,faram){ ... } or  
an anonymous function like foo = function(){ ... } ? The former won''t  
work, but the latter will.

There''s a bit in the prototype API docs about this if you give a look.

Walter

On Feb 18, 2008, at 1:42 PM, Micah Wedemeyer wrote:
>
> I''ve got a Rails partial with a javascript function
(let''s say foo)
> defined inside.  I''d like to be able to render this partial as
part of
> an AJAX response which makes foo available to the rest of the  
> javascript
> on the page.
>
> According to the prototype docs, scripts are evaluated, but I''m
not
> sure
> what that means.  I''ve tested with alert, and the alert box pops
up.
> However, with functions, they don''t appear in the generated HTML,
and
> cannot be accessed by function calls.
>
> Am I trying something crazy?  Any ideas?
>
> Thanks,
> Micah
>
> >

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It''s a normal function.  I''m a js newb, so I didn''t
even consider
anonymous functions.

I''ll run through the docs again and see if I can find it.

Thanks,
Micah

Walter Lee Davis wrote:
> Is this a normal function, like function foo(param,faram){ ... } or  
> an anonymous function like foo = function(){ ... } ? The former
won''t
> work, but the latter will.
>
> There''s a bit in the prototype API docs about this if you give a
look.
>
> Walter
>
> On Feb 18, 2008, at 1:42 PM, Micah Wedemeyer wrote:
>
>   
>> I''ve got a Rails partial with a javascript function
(let''s say foo)
>> defined inside.  I''d like to be able to render this partial as
part of
>> an AJAX response which makes foo available to the rest of the  
>> javascript
>> on the page.
>>
>> According to the prototype docs, scripts are evaluated, but
I''m not
>> sure
>> what that means.  I''ve tested with alert, and the alert box
pops up.
>> However, with functions, they don''t appear in the generated
HTML, and
>> cannot be accessed by function calls.
>>
>> Am I trying something crazy?  Any ideas?
>>
>> Thanks,
>> Micah
>>
>>     
>
>
> >
>   

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You might want to consider defining the function once in your JS file,
then call it from the Rails partial with parameters instead of
re-defining the function every time the partial is rendered.

There was a thread about this recently, I seem to remember the guy in
that thread having a similar problem to the one you are describing.

-justin

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I''m afraid I don''t have the solution, but I do have some
input:
I was trying to do exactly the same as what Micah is trying to do and
I got it to work with Firefox, I think I used the syntax that Walter
describes. But the problem was that it did not work in Internet
Explorer...
Can''t really explain why...

I had to use the workarounds to either include it in the general JS
file, as Justin suggests, or attach the code to an event in the code
that is retrieved with the AJAX call - e.g:
<div onclick="alert(''This is written when someone clicks this
div'');
alert(''this too'')">Click me</div>

-Mickster

On Feb 18, 8:09 pm, "Justin Perkins"
<justinperk...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> You might want to consider defining the function once in your JS file,
> then call it from the Rails partial with parameters instead of
> re-defining the function every time the partial is rendered.
>
> There was a thread about this recently, I seem to remember the guy in
> that thread having a similar problem to the one you are describing.
>
> -justin
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