Zaphod,
I think that solution works for strings/numbers, but I would also like this
to work with object refrences ... Something like:
objMenu.onmouseover = function(){
objMenuSystem.Show(this);
}
The problem here is the same... When the mouse over fires, "objMenuSystem"
is no undefined since it tries to find it reference to the Menu, not the
varaible reference. But then again, if I wanted it to work my way, "this"
would be off too, since it would point to the housing method... Not the
objMenu... Hmmm .. .and ... Dangy!
.......................
Ben Nadel
www.bennadel.com
-----Original Message-----
From: Zaphod Beeblebrox [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 20, 2006 10:31 AM
To: CF-Talk
Subject: Re: OT: Javascript help
the most I can think of is to evaluate the value right at the function
declaration:
objA.onclick = eval ('function(){ alert( ' + intI + ' ); };');
On 4/20/06, Ben Nadel <[EMAIL PROTECTED]> wrote:
>
> Not really for CF, but though someone here could lend some insight....
>
> There is one problem in Javascript that I cannot seem to get a handle
> on and it is killling me! I can't seem to get variables to pass by
> value as I would hope. Take the following example:
>
> for (var intI = 0 ; intI < 10 ; intI++){ var objA =
> document.createElement( "div" );
>
> // Set the click for the link.
> objA.onclick = function(){ alert( intI ); };
>
> // Set the link into the body div.
> objDiv.appendChild( objA );
> }
>
> Now, in my head, each one of those links, when clicked should alert
> the appropriate intI value (0, 1, 2, 3, etc.); however, each of them
> will alert 10 which is the value that broke the FOR loop. It's like
> they all point to one variable and then get updated for each loop of
> the FOR iteration.
>
> I can't seem to find a good solution to this. One method that seems to
> work, but is poop is something along the lines of:
>
> // Define a function INSIDE this function.
> function GetI( intX ){
> return(
> function(){ alert(intX); };
> );
> }
>
> for (var intI = 0 ; intI < 10 ; intI++){ var objA =
> document.createElement( "div" );
>
> // Set the click for the link.
> objA.onclick = GetI( intX );
>
> // Set the link into the body div.
> objDiv.appendChild( objA );
> }
>
> This method works as would be expected, though I seem to think that it
> is doing the exact same thing. It must be something to do with the
scoping.
> Since the intI value is getting passed to a local scope (int GetI()),
> and then getting passed back, it must be unique (since the local scope
> of the
> GetI() method is created unique of each FOR iteration.
>
> This solution seems truly ganky to me. There has to be a better way.
> And this is just a simple example. I have many places where I want to
> be doing this with object reference and dynamic event handling. This
> one simple bumb is really holding me back!
>
> Please help!!!
> .......................
> Ben Nadel
> www.bennadel.com
>
>
>
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