blocking roundtrip javascript

jaisonkmathews · November 25th, 2004, 03:25 AM

Hi all......
                I am dev. a wed app. using ASp.NET in which i want to block a roundtrip to server caused by a selection on DDL with a javascript function if a certain condition fails....
                I used "window.event.returnValue = false" , but it is still going for a round trip. The script is fired on the "onchange" event....
                Is there any way to do this...Please help me....
                Thanks to all.......

r_ganesh76 · November 25th, 2004, 05:03 AM

Add onsubmit event to the form.

Code:

onsubmit="return Validate()"

Code:

<script language="javascript">
    function Validate()
    {
        // Do Validation here and return true or false 
        return false;
    }
</script>

Now, for any submit, the post back will occour only if the validate method returns true.

Hope this helps...

Regards
Ganesh

jaisonkmathews · November 26th, 2004, 07:37 AM

hi r_ganesh76,
Thank u for the tip...It is working....

:)

r_ganesh76 · November 27th, 2004, 12:20 AM

Cheers :)

Regards
Ganesh