How do I make conditional forms using javascript?

**lucas** · Jul 9, 2001 12:15

I want to be able to make a form that will hide or unhide elements when an option is selected. how do i do this?

**lucas** · Jul 10, 2001 07:22

no one has a clue, ehh?

**muleteam** · Jul 10, 2001 13:37

What type of element are you trying to hide?

**moospot** · Jul 10, 2001 13:48

I've seen this before with DHTML.

Code:

<html>
<head>
<!--
This file retrieved from the JS-Examples archives
http://www.js-examples.com
100s of free ready to use scripts, tutorials, forums.
Author: JS-Examples - http://www.js-examples.com/ 
-->

<script type=text/javascript>
var isNS = navigator.appName.indexOf("Netscape")  != -1
var isIE = navigator.appName.indexOf("Microsoft") != -1
function show() {
  if (isNS) document.layers["d1"].visibility = "show";
  if (isIE) document.all.d1.style.visibility = "visible";
}
function hide() {
  if (isNS) document.layers["d1"].visibility = "hide";
  if (isIE) document.all.d1.style.visibility = "hidden";
}
</script>


</head>
<body>

<a href="javascript:show()">CLICK ME TO SHOW MESSAGE</a>
<BR><BR>
<a href="javascript:hide()">CLICK ME TO HIDE MESSAGE</a>
<div id="d1" style="visibility:hidden;position:relative;top:10;left:10">
<B>Hidden Message</b>
</div>


</body>
</html>

This may not be exactly what you are lokoing for, but it should help!

**lucas** · Jul 11, 2001 08:00

Originally posted by muleteam
What type of element are you trying to hide?

just form elements, like text boxes, radio buttons, etc.

**muleteam** · Jul 11, 2001 08:13

I think moospot is right. . . .DHTML layers are only option I can think of. Otherwise you would probably have to reload the page.

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