Is there a javascript event that will always fire upon postback?

[john]

I would like to do some client side stuff whenever my page is posting
back. My page has a lot of different buttons and links that will cause
a postback. I would rather not have to put something in each of their
"onclick" functions. I would rather have a global OnPostback function
or something like that. I tried using the form's onsubmit function,
but it only gets called when my buttons are clicked; it doesn't get
called when a link gets clicked or a dropdown list causes a postback.
I noticed that these things call the ASP.NET javascript function
__doPostBack. I don't know if I could somehow modify the __doPostBack
function to call my function that does stuff before a postback. Any
ideas?
thanks in advance.

[Peter O'Reilly]

Re: Is there a javascript event that will always fire upon postback?

Try:

document.MyForm .submit();

within one of your client side DOM object's onClick event procedure.

--
Peter O'Reilly

[Scott]

Re: Is there a javascript event that will always fire upon postback?


The easiest way I know (it's a hack) is to forward the _doPostBack to my own function and do what I
need in that new function then call _doPostBack (make sure you always force a the _doPostBack
generation on a page, the framework is clever enough to not include it sometimes).

Something like:


<script language="javas cript">
<!--
function MyDoPostBack(ev entTarget, eventArgument)
{ // do local stuff
if (theform.onsubm it == null || theform.onsubmi t()) {
return __oldPostBack(e ventTarget, eventArgument);
}
}
var __oldPostBack = __doPostBack;
__doPostBack = MyDoPostBack;
// -->
</script>
Scott

"john" <johngilmer@yah oo.com> wrote in message
news:2947476e.0 404090640.58a72 2ce@posting.goo gle.com...[color=blue]
> I would like to do some client side stuff whenever my page is posting
> back. My page has a lot of different buttons and links that will cause
> a postback. I would rather not have to put something in each of their
> "onclick" functions. I would rather have a global OnPostback function
> or something like that. I tried using the form's onsubmit function,
> but it only gets called when my buttons are clicked; it doesn't get
> called when a link gets clicked or a dropdown list causes a postback.
> I noticed that these things call the ASP.NET javascript function
> __doPostBack. I don't know if I could somehow modify the __doPostBack
> function to call my function that does stuff before a postback. Any
> ideas?
> thanks in advance.[/color]

[john]

Re: Is there a javascript event that will always fire upon postback?

Thanks for the response. I actually found a couple of javascript
events that fire when i want them to: onstop and onbeforeunload. But
they might only be available for IE.