?
Solved

Javascript onselect from drop down box

Posted on 2007-11-13
3
Medium Priority
?
19,430 Views
Last Modified: 2012-06-27
I have a drop down box ...
When the enduser selects something from this box, I need the focus to go to two radio buttons and require them to choose one of them...

and I need the radio buttons inactive UNTIL someone is selected from drop down...

Possible?
0
Comment
Question by:tsmithinnc
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 63

Expert Comment

by:Zvonko
ID: 20275404
Show your html that you have so far.

0
 
LVL 25

Expert Comment

by:James Rodgers
ID: 20275444
something like this
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
      <title>Untitled</title>
</head>

<body>
<select name="mySelect" id="mySelect" onChange="if(this.options[this.selectedIndex].value=='show'){document.getElementById('myFieldSet').style.visibility='visible'}else{document.getElementById('myFieldSet').style.visibility='hidden'}">
<option value="">Select</option>
<option value="show">Show</option>
<option value="hide">Hide</option>

</select><br>


<fieldset id="myFieldSet" style="border:1px solid grey; width:50%; visibility:hidden">
<legend>Select Option</legend>
<input type="radio" name="myRadio" value="0">Option 1<br>
<input type="radio" name="myRadio" value="1">Option 2<br>
<input type="radio" name="myRadio" value="2">Option 3<br>
<input type="radio" name="myRadio" value="3">Option 4<br>
</fieldset>


</body>
</html>
0
 
LVL 12

Accepted Solution

by:
netsmithcentral earned 2000 total points
ID: 20275516
Try this:

<html>
<head>
<script type="text/javascript">
<!--
function selChk(obj) {
      if(obj.value!='nosel') {
            var rs = document.getElementsByName('rad');
            for(i=0; i<rs.length; i++){
                  rs[i].disabled = false;
            }
            if(rs.length>0) rs[0].focus();
      } else {
            var rs = document.getElementsByName('rad');
            for(i=0; i<rs.length; i++){
                  rs[i].disabled = true;
                  rs[i].checked = false;
                  rs[i].blur();
            }
      }
}

function frmChk(){
      var rs = document.getElementsByName('rad');
      var chk = false;
      for(i=0; i<rs.length; i++){
            if(rs[i].checked) return true;
      }
      
      alert('You must select one of the choices!');
      return false;
}
//-->
</script>
</head>
<body>
<form onsubmit="return frmChk();">
The Select Box:
<select id="sel" onchange="selChk(this);">
      <option selected value="nosel">Select A Value
      <option value="val">Value
      <option value="val2">Value 2
</select>
<br><br>
The Radio Buttons:<br>
<input type="radio" name="rad" disabled> Choice 1&nbsp;&nbsp;<input type="radio" name="rad" disabled> Choice 2
<br><br>
The Submit Button: <input type="submit" value="Submit!">
</form>
</body>
</html>
0

Featured Post

Get real performance insights from real users

Key features:
- Total Pages Views and Load times
- Top Pages Viewed and Load Times
- Real Time Site Page Build Performance
- Users’ Browser and Platform Performance
- Geographic User Breakdown
- And more

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question