client side validation without postback

saravananedu · #1 (**permalink**) August 6th, 2005, 04:07 AM

Hi..all,

Im new to dotnet. I want to know how to do client script validation (say..javascript) without submitting the page. RequiredFieldValidator is useful when the user omits any entry.

But while clicking the submit button of the page, i want to do a validation in javascript as the text box entry should be a number and should not exceed the value 1000. since the button is a server control, after the javascript, control is not getting terminated. page continues to server side script and got submitted. how to overcome this without going to server side script?

Thanks in advance.

Best Regards,
Saravanan.

ros1188 · #2 (**permalink**) August 6th, 2005, 05:28 AM

http://msdn.microsoft.com/library/de...omfunction.asp

HTH

melvik · #3 (**permalink**) August 7th, 2005, 01:22 AM

u can use validation using JavaScript (Client Side or Server Side)
create funtion for validation & put it in form tag like

Code:

<script language="JavaScript">
function valid_form()
{
 if ....  
 else .....
 return false/true
}
</script>

then put it in form tag like

Code:

<form name="yyy" method="post" action="xxx.aspx" language="javascript" onsubmit="if (!valid_form()()) return false;" id="iii">

HTH.

Always:),
Hovik Melkomian.

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