As an asp.net developer and jQuery advocate I know I’m going to find this tip very useful

http://devoma.com/post/JQuery-and-ASPNET-validators.aspx

My button (server-side) was pumping out a bit of javascript 

Page.ClientScript.RegisterStartupScript(GetType(String),
         "loginunsuccessful", "<script type=""text/javascript"">
         alert('Login unsuccessful – please try again');</script>")

And this kept causing the error.

I tried using the prescribed fix: ClientScript.RegisterForEventValidation(mycontrol.uniqueid) in the prerender.  Still got the error.

Here’s how I fixed it.  RegisterStartupScript does the job of running at startup by emiting the js right at the foot of the page.  I wrapped my JS in jQuery’s own onload code.

Page.ClientScript. RegisterStartupScript(GetType(String),
          "loginunsuccessful", "<script type=""text/javascript"">
          $(document).ready(function(){alert('Login unsuccessful – please try again');});
          </script>")

Still the same error, I then changed to using Page.ClientScript.RegisterClientScriptBlock, which emits the JS in the midst of the html and hey presto no errors.  This is without using the RegisterForEventValidation I’d like to add.

Final code:

Page.ClientScript.RegisterClientScriptBlock(GetType(String),
          "loginunsuccessful", "<script type=""text/javascript"">
          $(document).ready(function(){BlockAlert('Login unsuccessful – please try again');});
          </script>")

Simple to fix when you know how.

After a big of digging I found how to use jQuery to “catch” the unload event. In case anyone else needs it:

$(window).unload( function () { GUnload(); } );

It’s a web app for playing Suduko.  It generates a new grid every day.  Utilises jQuery of course.

Find it here http://sudoku.nerdboy.co.uk/

I used http://www.testiphone.com/ to see that it worked and fitted the screen.

If anyone reading this actually has an iPhone and the time to test it I’d appreciate it.

Enjoy

Plus it has some very straightforward and powerful ajax features built in.

I did look at the whole ajax.net thing a while back and it was way too bloated for me to give it a serious look.

I’ve just heard the Microsoft have woken up to jQuery too.  In future versions of Visual Studio jQuery intellisense wil be built it.  Thanks Microsoft!