HI Michael,
Thank you so much for the very informative answer. I believe it will serve
me well in the future.
I guess what I was driving at, was rewriting a function in the head of my
page. But I see now that I can simply call dynamically generated functions
from the head - so there is no need to rewrite the functions that reside
there.
Cheers!
Michael Geary wrote:
>
>
>> From: juliandormon
>>
>> Is it possible to write javascript dynamically so new
>> functions are created with the new parameters once the user
>> makes a change? These functions need to be added to the head
>> of my page because they get called after other functions. In
>> other words, the new functions interact with the javascript
>> that's already on the page. I guess they could be written
>> elsewhere dynamically within a main function and I simply
>> call this remote function and thereby any sub functions that
>> have been written to it. Is this possible?
>
> JavaScript is a dynamic language. A *very* dynamic language. You can do
> anything, any time.
>
> JavaScript functions do not reside in the head nor the body of the
> document.
> All global functions are actually properties of the window object. Where
> or
> when you define them has no effect on that.
>
> Consider this piece of code:
>
> myfunction = function() { alert( 'hi!' ); };
>
> You could execute that code in a script tag in the head, in a script tag
> in
> the body, in a script that you load dynamically, or in a script that you
> *create on the fly*. It will do the same thing regardless.
>
> How about this one:
>
> eval( "myfunction = function() { alert( 'hi!' ); };" );
>
> That does exactly the same thing, but now you're using a string that you
> could have generated any way you like.
>
> If there is other code in the page that calls myfunction(), and you later
> redefine myfunction, that existing code will start using your new
> function.
>
> One exception: Suppose a piece of code does this, or something like it:
>
> var savemyfunction = myfunction;
>
> And then that code calls savemyfunction(). Code like that will not pick up
> your new function definition, because it has already saved a reference to
> the previous "myfunction".
>
> I didn't look at your specific question about innerFade, I'm just
> addressing
> the general question of defining functions dynamically.
>
> -Mike
>
>
>
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