Any convention?

I have one form w/ 30 textboxes. Among them, about 13-15 are required.

Your question is vague and belongs in the javascript area of the forum. I will assume you are looking for a value that is <> ""?

1..Add the following event to your form tag
<form ... onclick="return validate();">

2..Here is the function, place this in the head of your page
<script>
function validate()
{
  if (document.FormName.fieldName.value == "")
  {
     alert("You must enter a value");
     document.FormName.fieldName.focus();
     return (false);
  }
  return (true);
}
</script>

NOTE: this will validate one field - replace the formName and fieldName with your own.


Wind is your friend
Matt

Thank you, mat41

But, I'm curious what if someone disables javascript...
Also how about other checking for others such as date/time, number?
I just worry about the dependability of javascript checking... Thanks again.

;;;disables javascript...
mmmm there are lots wierdos out there - client side validation is the most efficient, if are concerened about this minority you can do it on the server side. IMO - how many people fit into this category and do we need thier business.

;;;Also how about other checking for others such as date/time, number?
To check for an integer:
if(isNaN(parseInt(document.fName.fieldName.value)) )
{
   alert("not a valid number
   document.fName.fieldName.focus();
   document.fName.fieldName.select();
   return(false);
}

Dates : dont let them enter them manualy - give them a date picker then just check for ""

;;dependability of javascript checking
If its turned on it will work - all my form validation is done with JS

Youre welcome

Wind is your friend
Matt