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I'm trying to run some clientside javascript on page load for one of my
ASP.Net pages. I am using the ClientScript.RegisterClient....() methods
to register an external javascript file within ASP.Net. When I put my
code on a ASP button and click it it works just find, runs my
javascript which popus up an alert and then changes the div text.
However, when I put this on a Page_Load event the alert comes up ok but
the changing of the div text does not occur. I have a feeling this has
something to do with not all the page elements being rendered or
avaiable in some way to the javascript. I've tried placing the code in
LoadComplete, and Init, with the same results. Any suggestions on how I
can get my javascript code to be triggered on page load from ASP and be
able to access page elements like div tags? I don't have my code in
front of me now but could come up with example if needed. Any advice is
appreciated.

David Mathew

using masterpages? if so, it changes the client ID


Dave Mathew wrote:
> I'm trying to run some clientside javascript on page load for one of my
> ASP.Net pages. I am using the ClientScript.RegisterClient....() methods
> to register an external javascript file within ASP.Net. When I put my
> code on a ASP button and click it it works just find, runs my
> javascript which popus up an alert and then changes the div text.
> However, when I put this on a Page_Load event the alert comes up ok but
> the changing of the div text does not occur. I have a feeling this has
> something to do with not all the page elements being rendered or
> avaiable in some way to the javascript. I've tried placing the code in
> LoadComplete, and Init, with the same results. Any suggestions on how I
> can get my javascript code to be triggered on page load from ASP and be
> able to access page elements like div tags? I don't have my code in
> front of me now but could come up with example if needed. Any advice is
> appreciated.
>
> David Mathew
>

I think what you are running into is the javascript code being executed
before the elements of your page have been created in the page DOM.
Try to stick your javascript into the onload attribute of your body tag
and see if it will work.

If this does work, I think what you will have to do is register your
javascript with the onload event either by adding it as an attribute of
the body tag or via external script.

http://www.quirksmode.org/js/events_advanced.html

The above article is similar to what you could use to register your
javascript with the load event except of course the event you want to
register for is load (onload in IE) and I believe you want to use
window as your element.

I wrote a javascript register function that handles cross browser
registration a while ago but don't have it with me. Let me know if you
want it and I'll post it. I believe there are also similar examples
out there somewhere on the web.

Clint.

Dave Mathew wrote:
> I'm trying to run some clientside javascript on page load for one of my
> ASP.Net pages. I am using the ClientScript.RegisterClient....() methods
> to register an external javascript file within ASP.Net. When I put my
> code on a ASP button and click it it works just find, runs my
> javascript which popus up an alert and then changes the div text.
> However, when I put this on a Page_Load event the alert comes up ok but
> the changing of the div text does not occur. I have a feeling this has
> something to do with not all the page elements being rendered or
> avaiable in some way to the javascript. I've tried placing the code in
> LoadComplete, and Init, with the same results. Any suggestions on how I
> can get my javascript code to be triggered on page load from ASP and be
> able to access page elements like div tags? I don't have my code in
> front of me now but could come up with example if needed. Any advice is
> appreciated.
>
> David Mathew
>