JavaScript Forum

**Dee2007** · 01:26 PM

Hi All, I posted this yesterday, but didn't get a responce, I apologise if I shouldn't have posted again, but I need to get this sorted asap

I was told you need to add javascript to make an options field in a paypal buy it now button mandatory, but I don't know how.
Currently if they don't select a colour that part comes to me blank, but I need it so they MUST select a colour.

Any help would be very much appreciated

This is that part of the code.

Dee

<INPUT type=hidden value="Colour " name=on0>
(**REQUIRED**) Please enter colour
</TD>
<TD>
<SELECT name=os0>
<OPTION value="none selected" selected>
Please select a colour
</OPTION>
<OPTION value="Black">
Black
</OPTION>
<OPTION value="Green">
Green
</OPTION>
</SELECT>
</TD>
</TR>
</TBODY>
</TABLE>
<BR>
<INPUT type=image alt="Make payments with PayPal - it's fast, free and secure!" src="https://www.paypal.com/images/x-click-but23.gif" border=0 name=submit3>

**logic ali** · 08-21-2007, 08:29 PM

Inside the <form> tag insert:

Code:

onsubmit="return colourCheck(os0)"

In the <head> section insert:

Code:

<script type='text/javascript'>
function colourCheck(box)
{
 var rv=true;

 if(box.selectedIndex<1)
 {
  rv=false;
  alert("Please select a colour.");
 }
 return rv;
}
</script>

**Dee2007** · 09:06 AM

Hi Thanks loads for the reply.
I found a way to make the drop downs mandatory (while I wanted to see if i got a reply)

Using this code

<SCRIPT LANGUAGE="JavaScript">
function check_it(paypalform){
if(paypalform.os0.value == 'none selected'){
alert('Please Select A Colour');
return false;
}
return true;
}
</script>

<FORM action=https://www.paypal.com/cgi-bin/webscr method=post name="paypalform" onsubmit="return check_it(this);">

I have a second problem, I used the code above for the drop downs but I also need to make the input boxes mandatory, so I used this code.

<SCRIPT LANGUAGE="JavaScript">
function check_it(paypalform){
if(paypalform.os0.value == ''){
alert('Please enter a size');
return false;
}
return true;
}
</script>

<FORM action=https://www.paypal.com/cgi-bin/webscr method=post name="paypalform" onsubmit="return check_it(this);">
<INPUT type=hidden value=_xclick name=cmd>

While both codes work on there own, when they are both on the same page, the drop down code stops working, there must be a code conflict somewhere, but I haven't a clue where?

Any help again would be much appreciated.

Thanks
Dee