Question

Reuse of Populated Dropdown

Asked by: rayne101

I am using the function below to generate a drop down list.  My problem is that I am trying to reuse the list 3 times on the same page, but the list will not populate after the first. Any help would be appreciated. Thanks

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<SCRIPT>
function populate()
{
     var selectBox2 = document.getElementById('selectBox2');
     for( i = 0; selectBox2.length > 0; i++ )
     {
          selectBox2.options[i] = null;
          if( selectBox2.length > 0 )
               selectBox2.length--;
     }
     
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "admin" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );       
          selectBox2.options[1] = new Option( 'Financial Services', 'Financial Services' );

            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "adult" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );       
          selectBox2.options[1] = new Option( 'www', 'www' );
                             
            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }      
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "fss" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );       
          selectBox2.options[1] = new Option( 'Offices', 'Offices' );
          selectBox2.options[2] = new Option( 'Operations', 'Operations' );
          selectBox2.options[3] = new Option( 'Program', 'Program' );                              
            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }              
      if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "cfs" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );       
          selectBox2.options[1] = new Option( 'ddd', 'ddd' );
          selectBox2.options[2] = new Option( 'aaa', 'aaa' );
          selectBox2.options[3] = new Option( 'bbb', 'bbb' );
   
              if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }       
 
     else
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );       
          selectBox2.options[1] = new Option( 'nnn', 'nnn' );
          selectBox2.options[2] = new Option( 'nnn', 'nnn' );
            if( document.getElementById('selectBox3').style.display != 'block' )
               document.getElementById('selectBox3').style.display = 'block';
     }
}
</SCRIPT>
</head>

<body>
<table><tr>
<td><br>
<select name="div1" class="text" ID="selectBox1" onChange="populate();">
<option value="0">Select Division</option>
<option value="admin">Administrative Services</option>
<option value="adult">Adult Services</option>
<option value="assist">Assistance Programs</option>
<option value="cfs">Children and Family Services</option>
<option value="fss">Family Self Sufficiency</option>
</select>
</td>
<td bgcolor="#FFFFFF"><select name="program1" ID="selectBox2">
<option value="0">Select Organization</option>
</select>
</td>
</tr></table>
</body>
</html>

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Asked On
2005-03-08 at 16:32:45ID21342970
Tags

dropdown

,

reuse

,

division

,

html

,

populated

Topic

JavaScript

Participating Experts
3
Points
500
Comments
4

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Answers

 

by: BatalfPosted on 2005-03-08 at 16:35:49ID: 13492004

Try


function populate()
{
     var selectBox2 = document.getElementById('selectBox2');
     selectBox2.options.length=0;
     
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "admin" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'Financial Services', 'Financial Services' );

            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "adult" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'www', 'www' );
                         
            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }    
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "fss" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'Offices', 'Offices' );
          selectBox2.options[2] = new Option( 'Operations', 'Operations' );
          selectBox2.options[3] = new Option( 'Program', 'Program' );                          
            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }            
      if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "cfs" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'ddd', 'ddd' );
          selectBox2.options[2] = new Option( 'aaa', 'aaa' );
          selectBox2.options[3] = new Option( 'bbb', 'bbb' );
   
             if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }      
 
     else
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'nnn', 'nnn' );
          selectBox2.options[2] = new Option( 'nnn', 'nnn' );
            if( document.getElementById('selectBox3').style.display != 'block' )
               document.getElementById('selectBox3').style.display = 'block';
     }
}

 

by: rayne101Posted on 2005-03-08 at 17:00:59ID: 13492123

Tried the code and it didn't work.  

 

by: davlun20080Posted on 2005-03-09 at 00:02:21ID: 13493786

Is this what you are looking for??


<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<SCRIPT>
function populate()
{
     var selectBox2 = document.getElementById('selectBox2');
     for( i = 0; selectBox2.length > 0; i++ )
     {
          selectBox2.options[i] = null;
          if( selectBox2.length > 0 )
               selectBox2.length--;
     }
     
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "admin" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'Financial Services', 'Financial Services' );

            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "adult" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'www', 'www' );
                         
            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }    
     if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "fss" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'Offices', 'Offices' );
          selectBox2.options[2] = new Option( 'Operations', 'Operations' );
          selectBox2.options[3] = new Option( 'Program', 'Program' );                          
            if( document.getElementById('selectBox3').style.display != 'none' )
               document.getElementById('selectBox3').style.display = 'none';
     }            
      if( document.getElementById('selectBox1').options[document.getElementById('selectBox1').selectedIndex].value == "cfs" )
     {
          selectBox2.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox2.options[1] = new Option( 'ddd', 'ddd' );
          selectBox2.options[2] = new Option( 'aaa', 'aaa' );
          selectBox2.options[3] = new Option( 'bbb', 'bbb' );
   

              selectBox3.options[0] = new Option( 'Select Program/Unit', '0' );      
          selectBox3.options[1] = new Option( 'nnn', 'nnn' );
          selectBox3.options[2] = new Option( 'nnn', 'nnn' );
         
              if( document.getElementById('selectBox3').style.display != 'block' )
               document.getElementById('selectBox3').style.display = 'block';

     }
}
</SCRIPT>
</head>

<body>
<table><tr>
<td><br>
<select name="div1" class="text" ID="selectBox1" onChange="populate();">
<option value="0">Select Division</option>
<option value="admin">Administrative Services</option>
<option value="adult">Adult Services</option>
<option value="assist">Assistance Programs</option>
<option value="cfs">Children and Family Services</option>
<option value="fss">Family Self Sufficiency</option>
</select>
</td>
<td bgcolor="#FFFFFF"><select name="program1" ID="selectBox2">
<option value="0">Select Organization</option>
</select></td><td bgcolor="#FFFFFF"><select name="program2" ID="selectBox3">
<option value="0">Select Organization</option>
</select>
</td>
</tr></table>
</body>
</html>

 

by: ZvonkoPosted on 2005-03-09 at 01:52:08ID: 13494300

Here a tested and working code:

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<SCRIPT>
var aOpt = new Array();
aOpt["admin"] = [
['Select Program/Unit', '0' ],
['Financial Services', 'Financial Services']];
aOpt["adult"] = [
['Select Program/Unit', '0'],
['www', 'www']];
aOpt["assist"] = [
['Select Program/Unit', '0'],
['nnn', 'nnn'],
['nnn', 'nnn']];
aOpt["cfs"] = [
['Select Program/Unit', '0'],
['Offices', 'Offices'],
['Operations', 'Operations'],
['Program', 'Program']];
aOpt["fss"] = [
['Select Program/Unit', '0'],
['ddd', 'ddd'],
['aaa', 'aaa'],
['bbb', 'bbb']];


function populate(theSel){
    var theForm = theSel.form;
    theForm.selectBox3.style.display = "none";
    var opt = theForm.selectBox2.options;
    opt.length = 0;
    var newOpt = aOpt[theSel.value];
    for(var i=0;i<newOpt.length;i++){
      opt[i] = new Option(newOpt[i][0],newOpt[i][1]);
    }
}
</SCRIPT>
</head>
<body>
<form>
<table><tr>
<td>
<select name="div1" class="text" ID="selectBox1" onChange="populate(this);">
<option value="0">Select Division</option>
<option value="admin">Administrative Services</option>
<option value="adult">Adult Services</option>
<option value="assist">Assistance Programs</option>
<option value="cfs">Children and Family Services</option>
<option value="fss">Family Self Sufficiency</option>
</select>
</td>
<td bgcolor="#FFFFFF"><select name="program1" ID="selectBox2" name="selectBox2">
<option value="0">Select Organization</option>
</select>
</td>
<td bgcolor="#FFFFFF"><select name="program2" ID="selectBox3" name="selectBox3" style="display:none">
<option value="0">Select Organization</option>
</select>
</td>
</tr></table>
<input type=submit>
</form>
</body>
</html>


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