Solved

PHP/JavaScript Form Listbox Value Retention

Posted on 2007-03-20
2
1,368 Views
Last Modified: 2012-06-27
I've got an HTML form that is submitting data to PHP. I'm working on what happens when a user submits the form, but it fails validation. So the form needs to re-display with the values the user entered using session variables. It was easy with the other form elements, but I'm having a problem with the list boxes.

I'm trying to use JavaScript to cycle through the listbox and look for a value that matches PHP's session variable. I'm kind of hung up on the code. Help, please? btw - If there is an easier way of doing this that would be great. Thanks.

<td valign="top">Manages Others: </td>
<td>
  <select name="manages_others" tabindex="12">
    <option value="" selected="selected">Please Select One</option>
    <option value="1">Yes</option>
    <option value="0">No</option>
  </select>
</td>
<script type="text/javascript">
  var obj = document.all.add_job.manages_others;
  var index = obj.selectedIndex;
  var index_value = obj.options[index].value;
                         
  for (i=0; i < obj.length; i++) {
    if (index_value == <?php print($_SESSION['manages_others']); ?>) {
      //I've had all sorts of code here and played with the condition above, but I think I'm a little confused on how list boxes work in JS                                    
     }
  }       
</script>
0
Comment
Question by:damijim
2 Comments
 
LVL 9

Accepted Solution

by:
under_dog earned 500 total points
ID: 18756366
 <select name="manages_others" tabindex="12">
    <option value=""<?php if ($_SESSION['manages_others'] == "") { echo ' selected'; } ?>>Please Select One</option>
    <option value="1"<?php if ($_SESSION['manages_others'] == "1") { echo ' selected'; } ?>>Yes</option>
    <option value="0"<?php if ($_SESSION['manages_others'] == "2") { echo ' selected'; } ?>>No</option>
  </select>

You don't need the javascript ;)
0
 
LVL 1

Author Comment

by:damijim
ID: 18756377
ah ha, didn't think of that. Thanks. :)
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

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

Developers of all skill levels should learn to use current best practices when developing websites. However many developers, new and old, fall into the trap of using deprecated features because this is what so many tutorials and books tell them to u…
This article discusses four methods for overlaying images in a container on a web page
The viewer will learn how to dynamically set the form action using jQuery.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

831 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