"if" condition based on form submit

[kirankulkarni]

I have a function which i want to call on the submit of a form.

e.g.
<form>
some code
<input type=submit name=somename onClick=document.form.action=page2.jsp>

<% if (here i want the code that says implement &quot;if&quot; if the submit button is pressed). I'm trying,

if(request.getParameter(somename).equalsIgnoreCase(submit){}

but it implements the if on page load and gives a null pointer exception.

Thanks in advance for your help

 

[palbano]

> if(request.getParameter(somename).equalsIgnoreCase(submit){}

request.getParameter(&quot;hello&quot

That will return 'null' if 'somename' doesnot exist therefore you end up with

null.equalsIgnoreCase(submit)

hence the null pointer exception

Good luck
-pete

 

[sunKing]

pete got it right::
but start your page with
<%if (null.equalsIgnoreCase(submit)){
%>
show your form

<%} else {
//handle your code

}%>