Javascript pop up not loading

Question

I have the following code behind -

int p = 0;

        try
        {

            p = System.Convert.ToInt16(txt7.Text);
        }
        catch
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "showMyMessage", "ShowMessage('Value must be numerical');", true);
        }

And the function -

 <script>

  function ShowMessage(message) { alert(message); }

</script>

On debugging it goes into the catch however the pop up is not firing in the front end, what is it I am missing?

By On debugging it goes into the catch however the pop up is not firing in the front end, I hope you're not expecting the popup to appear as soon as you debug yor way over the RegisterStartupScript line? — Rawling
– Rawling, Commented Feb 28, 2013 at 11:44
no it is missing this on normal running as well, i have no idea why its not working. — Ebikeneser
– Ebikeneser, Commented Feb 28, 2013 at 11:46
Fair enough... I've seen too many people who expect this kind of thing to immediately show up on the client ^^ If you load the page and look at the source, can you see any references to ShowMessage? A definition, or a call to it? — Rawling
– Rawling, Commented Feb 28, 2013 at 11:50

K D · Accepted Answer · 2013-02-28 11:43:05Z

1

Place your script at the top of the page (inside your body tag or head tag) as that could be the reason for it.. The startup scrip call should be below your mentioned script. and for best practice please write it like this

<script type="text/javascript">

  function ShowMessage(message)
   {
        alert(message); 
   }    
</script>

answered Feb 28, 2013 at 11:43

K D

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1 Comment

Rawling Over a year ago

I'm pretty sure RegisterStartupScript renders the script at the very end of the page anyway:

The script block added by the RegisterStartupScript method executes when the page finishes loading but before the page's OnLoad event is raised.

Axel · Accepted Answer · 2013-02-28 11:44:22Z

1

If you are using UpdatePanels, then you should instead use ScriptManager.RegisterStartupScript

answered Feb 28, 2013 at 11:44

Axel

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Comments

coder · Accepted Answer · 2013-02-28 12:04:33Z

0

Add type of script and place script at the top..

 <script type="text/javascript">

 funcion ShowMessage(message)
 {
  alert(message);
 }

</script>

edited Feb 28, 2013 at 12:04

answered Feb 28, 2013 at 11:48

coder

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2 Comments

happygilmore Over a year ago

I don't know but I'm guessing that you haven't answered anything, just rewrote the question with a type attribute.

coder Over a year ago

@happygilmore No..I thought adding type="text/javascript" will solve the problem.Thats why i added that...

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