Adding Options 2

Carl Leiby Jul 30, 2007

General

Add or change options on a form select menu. This script will also allow sub-group items, for additional selections.

Notes

Created by: Carl Leiby
Web Site: http://leibys-place.com/
Posted: July 30, 2007

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: addingOptions.js

/* This script and many more are available free online at
The JavaScript Source!! http://www.javascriptsource.com
Created by: Carl Leiby | http://leibys-place.com/ */
var otherStuff = {
   "item 1" : [ "subitem 1.1", "subitem 1.2", "subitem 1.3", "subitem 1.4" ],
   "item 2" : [ "subitem 2.1", "subitem 2.2" ],
   "item 4" : [ "subitem 4" ],
   "item 6" : [ "subitem 6.1", "subitem 6.2" ]
};

function selectAll(listName, selected) {
  var listBox = document.getElementById(listName);
  for(i=0; i<listBox.length; i++) {
    listBox.options[i].selected=selected;
  }
  if( listBox.onchange ) {
    listBox.onchange();
  }
}

function lstStuff_OnChange() {
  var listBox = document.getElementById("lstStuff");
  var subListBox = document.getElementById("lstOtherStuff");
  subListBox.options.length=0;
  for(i=0; i<listBox.length; i++) {
    if( listBox.options[i].selected ) {
      var key = listBox.options[i].text;
      if(otherStuff[key]) {
        for(j=0; j<otherStuff[key].length; j++) {
        subListBox.options.add(new Option(otherStuff[key][j],otherStuff[key][j]));
        }
      }
    }
  }
}

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="addingOptions.js"></script>

Body

Paste this code into the BODY section of your HTML document


<form>
		<select id="lstStuff" multiple="multiple" onChange="lstStuff_OnChange()" size="6" style="width:200px;">
 			<option>item 1</option>
 			<option>item 2</option>
 			<option>item 3 (No Sub-Items)</option>
 			<option>item 4</option>
 			<option>item 5 (No Sub-Items)</option>
 			<option>item 6</option>			
		</select>	
		<br>Select: 
		<a href="javascript:selectAll('lstStuff', true);">all</a> |
		<a href="javascript:selectAll('lstStuff', false);">none</a>
		<p>
		<select id="lstOtherStuff" multiple="multiple" size="6" style="width:200px;">
		</select>
		<br>Select: 
		<a href="javascript:selectAll('lstOtherStuff', true);">all</a> |
		<a href="javascript:selectAll('lstOtherStuff', false);">none</a>
</form>

Leave a Response

(2 comments)

I'm not sure as I would need to see how it is implemented. In order to answer you question properly, you will need to post it over on [a href="http://www.webdeveloper.com/forum/forumdisplay.php?f=3"]the JavaScript forum[/a]. Thanks!

Lee Jan 16, 2009

Hi there,[br /][br /]Great code idea, but when I try to make it work on a https environment, it just won't run. Do you have any idea of a way around it?[br /][br /]Thanks a lot[br /][br /]Gui

Guilherme Altmayer Nov 25, 2008

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