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javascript code to add select box dynamically

Posted on 2008-10-23
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1,962 Views
Last Modified: 2012-05-05
Hi ,
I am using the following form and what i want is a javascript code which should add a select box once somebody clicks on the "choice 4".

NOTE: The select list should come exactly below the check boxes.

Thanks
<html>

<head>

<body>

<form name = test>

<table>
 

<tr>

      <td style="HEIGHT: 30px" height="30"><p class="style3" align="right">* <span id="lblReason">Select A Choice</span>:</p></td>

      <td style="HEIGHT: 21px"><label>&nbsp;&nbsp;&nbsp;&nbsp;

                <INPUT TYPE=RADIO name="ddlReason" value="Choice 1"><label class="style3">Choice 1</label>

		<INPUT TYPE=RADIO name="ddlReason" value="Choice 2"><label class="style3">Choice 2</label>

		<INPUT TYPE=RADIO name="ddlReason" value="Choice 3"><label class="style3">Choice 3</label>

		<INPUT TYPE=RADIO name="ddlReason" value="Choice 4" onclick = "test();"><label class="style3">Choice 4</label>

      
 

     </td>

</tr>

</table>

</form>

</body>

</html>

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Comment
Question by:Shiva_Kumar
  • 4
  • 3
7 Comments
 
LVL 82

Expert Comment

by:hielo
ID: 22791270
try this:
<html>
<head>
<body>
<script type="text/javascript"> 
function removeSelect(){
	document.getElementById("theSelect").innerHTML="";
}
function addSelect(){
	var selectList="<select name='myOptions'>\
				<option value=''>Make a selection</option>\
				<option value='a'>A</option>\
				<option value='b'>B</option>\
				<option value='c'>C</option>\
				</select>";
	document.getElementById("theSelect").innerHTML=selectList;
}
</script>
<form name="test">
<table>
 
<tr>
      <td style="HEIGHT: 30px" height="30"><p class="style3" align="right">* <span id="lblReason">Select A Choice</span>:</p></td>
      <td style="HEIGHT: 21px">
          <INPUT TYPE=RADIO name="ddlReason" value="Choice 1"><label class="style3">Choice 1</label>
		<INPUT TYPE=RADIO name="ddlReason" value="Choice 2"><label class="style3">Choice 2</label>
		<INPUT TYPE=RADIO name="ddlReason" value="Choice 3" onclick = "removeSelect();"><label class="style3">Choice 3</label>
		<INPUT TYPE=RADIO name="ddlReason" value="Choice 4" onclick = "addSelect();"><label class="style3">Choice 4</label> 
     </td>
</tr>
<tr><td></td><td><div id="theSelect"></div></td></tr>
</table>
</form>
</body>
</html>

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Author Comment

by:Shiva_Kumar
ID: 22797030
Hi,

Thank you for the code.  It works fine.  However when i add the above javascript code to my actual form it doesn't work(error on page).  Could you please let me know what am I doing wrong here.

<?

//Php validation code
 

?>

<html>

<head>

<link rel="shortcut icon" href="favicon.ico" />

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>Partner Escalation</title>

<style type="text/css">

<!--

.style1 {                FONT-WEIGHT: bold; FONT-SIZE: 14px; FONT-FAMILY: Verdana, Arial, Helvetica, 

 

sans-serif

}

.style2 {                FONT-SIZE: 10px; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif

}

.style3 {                FONT-SIZE: 10px; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif

}
 

-->

</style>
 

<script language="text/javascript">

function addSelect(){

	var selectList="<select name='myOptions'>\

				<option value=''>Make a selection</option>\

				<option value='a'>A</option>\

				<option value='b'>B</option>\

				<option value='c'>C</option>\

				</select>";

	document.getElementById("theSelect").innerHTML=selectList;

}
 

function callcaseno()

{

var location=("http://abc.com/xyx.php?siteid=<? echo $_GET['siteid']; ?>");

this.location.href = location;
 

}
 
 

function make_blanked()

{

document.escalation.txttime.value ="";

}
 

</script>
 

 

</head>

 

<body>

 

 

<form name ="escalation" id ="escalation" action="test.php?siteid=<? echo $_GET['siteid'];?>" method="POST">

<table width="700" border="0" cellpadding="0" cellspacing="0">

  <tbody>

   <tr>

      <td colspan="2"><div class="style1" align="center"><img 

    

      <div align='center'><span id='lblPartnername'></span>&nbsp;$src Support Form</div>

      </div></td>

    </tr>

    <tr>

      <td colspan="2" height="50"><span id="lblErrMsg" 

 

style="color:Red;font-weight:bold;"></span>

          <div id="ValidationSummary1" style="color:Red;display:none;"> </div></td>

    </tr>

  </tbody>

  <div id="pnlNew">

    <tr>

      <td height="25"><div class="style3" align="left">

        <div align="right">Do you have a issue number?</div>

      </div></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

                     <select name="ddlExisting" onChange="addSelect()" language ="javascript">              

               <option selected="selected" value="No">No</option>

              <option value="Yes">Yes</option>

            </select>

      </label></td>

    </tr>

    <tr>

      <td height="25"><p class="style3" align="right">* <span id="lblFname">First 

 

name</span>:</p></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtFname" type="text" id="txtFname" value="<?=$firstname;?>" designtimedragdrop="243" title="Enter First Name here" /> 

    </tr>

    <tr>

      <td height="25"><p class="style3" align="right">* <span id="lblLname">Last 

 

name</span>:</p></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtLname" type="text" id="txtLname" value="<?=$lastname;?>" designtimedragdrop="304" title="Enter Last Name here"/>    

 

</tr>

    <tr>

      <td height="25"><p class="style3" align="right">* <span id="lblPhone">Callback 

 

Number</span>:</p></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtPhone" type="text" id="txtPhone" value="<?=$telno;?>" designtimedragdrop="306" title="Enter Customer's Callback Number here. NOTE: Please do not enter spaces/dashes in the callback number"/>

            </td>

    </tr>
 

<tr>

      <td height="25"><p class="style3" align="right">* <span id="lblcal">Callback Date and Time</span>:</p></td>

      <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input onclick="ds_sh(this);" name="txtcal" id="txtcal" value="<?=$calendar;?>" readonly="readonly" style="cursor: text" title="Click here to get the Calendar to select the date" value="<?=$calendar;?>"/>

	    <input name="txttime" id="txttime" size = 4 value="<?=$time;?>" onclick="make_blanked();" title="Enter the callback time here">

<?

if(($_GET['siteid']) !="anz")

{

if(($_GET['siteid']) !="xerox") 

{
 
 
 

echo "<select name='txtzone' id='txtzone' title='Select the Time Zone here'>";
 

$style = array(''=>'Time Zone','EST'=>'EST','CST'=>'CST','MST'=>'MST','PST'=>'PST');

foreach ($style as $value=>$value_text)

{

$selected = (isset($_REQUEST['proptypeList']) && $_REQUEST['proptypeList']==$value)?" selected":"";

echo "<option value=\"$value\"$selected>$value_text</option>";

}

echo "</select>";
 

}}

?>

            </td>

    </tr>
 
 

    <tr>

      <td style="HEIGHT: 21px" height="21"><p class="style3" align="right">* <span 

 

id="lblEmail">Email Address</span>:</p></td>

      <td style="HEIGHT: 21px"><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtEmail" type="text" id="txtEmail" value="<?=$emailadd;?>" title="Enter customer's Email Address here"/>

      </td>

   </tr>
 
 
 

    <tr>

      <td style="HEIGHT: 30px" height="30"><p class="style3" align="right">* <span 

 

id="lblReason">Reason for Escalation</span>:</p></td>

      <td style="HEIGHT: 21px"><label>&nbsp;&nbsp;&nbsp;&nbsp;

                <INPUT TYPE=RADIO name="ddlReason" value="Product Escalation"><label class="style3">Product Escalation</label>

		<INPUT TYPE=RADIO name="ddlReason" value="Long Hold Time"><label class="style3">Call Hold Times</label>

		<INPUT TYPE=RADIO name="ddlReason" value="System Down"><label class="style3">System Down</label>

		<INPUT TYPE=RADIO name="ddlReason" value="Infection" onclick = "addSelect();"><label class="style3">Infections/Viruses</label>

   
 
 

</td>

   </tr>
 
 

    

    <tr>

      <td style="HEIGHT: 30px" height="25"><p class="style2" align="right">* Description of Issue:</p></td>

      <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

          <textarea name="txtDesc" rows="3" id="txtDesc" style="width:392px;" value="<?=$description;?>" title="Enter the Description of the Issue here"></textarea>

          </td>

    </tr>

<tr>

      <td style="HEIGHT: 30px" height="30"><p class="style2" align="right">* Troubleshooting Steps Performed:</p></td>

      <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

          <textarea name="txtTr" rows="3" id="txtTr" style="width:392px;" value="<?=$troubleshootin;?>" title="Eneter the Troubleshooting steps performed by you here"></textarea>

          </td>

    </tr>
 

    <tr>

      <td height="35">&nbsp;</td>

      <td>&nbsp;</td>

    </tr>

    <tr>

      <td>&nbsp;</td>

      <td><label>&nbsp;

            <input type="submit" name="submit" id="submit" value="Submit">

      </label></td>

    </tr>

</form>

</body>

</html>

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LVL 82

Accepted Solution

by:
hielo earned 350 total points
ID: 22797973
Due to this:
>>document.getElementById("theSelect").innerHTML=selectList;

For that to work you need some element/tag with id="theSelect". In my example I used:
<div id="theSelect"></div>

I don't know where you want your select list, but just put some element with id="theSelect" wherever you want and the select list will show there - ex:

<?

//Php validation code

 

?>

<html>

<head>

<link rel="shortcut icon" href="favicon.ico" />

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>Partner Escalation</title>

<style type="text/css">

<!--

.style1 {                FONT-WEIGHT: bold; FONT-SIZE: 14px; FONT-FAMILY: Verdana, Arial, Helvetica, 

 

sans-serif

}

.style2 {                FONT-SIZE: 10px; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif

}

.style3 {                FONT-SIZE: 10px; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif

}

 

-->

</style>

 

<script type="text/javascript">

function addSelect(){

	var selectList="<select name='myOptions'>\

				<option value=''>Make a selection</option>\

				<option value='a'>A</option>\

				<option value='b'>B</option>\

				<option value='c'>C</option>\

				</select>";

	document.getElementById("theSelect").innerHTML=selectList;

}

 

function callcaseno()

{

	var location=("http://abc.com/xyx.php?siteid=<? echo $_GET['siteid']; ?>");

	location.href = location;

}

 

function make_blanked()

{

	document.escalation.txttime.value ="";

} 

</script>

 

 

</head>

 

<body>

 

 

<form name ="escalation" id ="escalation" action="test.php?siteid=<? echo $_GET['siteid'];?>" method="POST">

<table width="700" border="2" cellpadding="0" cellspacing="0">

  <tbody>

   <tr>

      <td colspan="2"><div class="style1" align="center"><img 

    

      <div align='center'><span id='lblPartnername'></span>&nbsp;$src Support Form</div>

      </div></td>

    </tr>

    <tr>

      <td colspan="2" height="50"><span id="lblErrMsg" style="color:Red;font-weight:bold;"></span>

          <div id="ValidationSummary1" style="color:Red;display:none;"> </div></td>

    </tr>

  </tbody>

  <div id="pnlNew">

    <tr>

      <td height="25"><div class="style3" align="left">

        <div align="right">Do you have a issue number?</div>

      </div></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

                     <select name="ddlExisting" onchange="addSelect()">              

               <option selected="selected" value="No">No</option>

              <option value="Yes">Yes</option>

            </select>

      </label></td>

    </tr>

    <tr>

      <td height="25"><p class="style3" align="right">* <span id="lblFname">First 

 

name</span>:</p></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtFname" type="text" id="txtFname" value="<?=$firstname;?>" designtimedragdrop="243" title="Enter First Name here" /> 

    </tr>

    <tr>

      <td height="25"><p class="style3" align="right">* <span id="lblLname">Last 

 

name</span>:</p></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtLname" type="text" id="txtLname" value="<?=$lastname;?>" designtimedragdrop="304" title="Enter Last Name here"/>    

 

</tr>

    <tr>

      <td height="25"><p class="style3" align="right">* <span id="lblPhone">Callback 

 

Number</span>:</p></td>

      <td><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtPhone" type="text" id="txtPhone" value="<?=$telno;?>" designtimedragdrop="306" title="Enter Customer's Callback Number here. NOTE: Please do not enter spaces/dashes in the callback number"/>

            </td>

    </tr>

 

<tr>

      <td height="25"><p class="style3" align="right">* <span id="lblcal">Callback Date and Time</span>:</p></td>

      <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input onclick="ds_sh(this);" name="txtcal" id="txtcal" value="<?=$calendar;?>" readonly="readonly" style="cursor: text" title="Click here to get the Calendar to select the date" value="<?=$calendar;?>"/>

	    <input name="txttime" id="txttime" size = 4 value="<?=$time;?>" onclick="make_blanked();" title="Enter the callback time here">

<?

if(($_GET['siteid']) !="anz")

{

	if(($_GET['siteid']) !="xerox") 

	{

		echo "<select name='txtzone' id='txtzone' title='Select the Time Zone here'>";

		$style = array(''=>'Time Zone','EST'=>'EST','CST'=>'CST','MST'=>'MST','PST'=>'PST');

		foreach ($style as $value=>$value_text)

		{

			$selected = (isset($_REQUEST['proptypeList']) && $_REQUEST['proptypeList']==$value)?" selected":"";

			echo "<option value=\"$value\"$selected>$value_text</option>";

		}

		echo "</select>";

	}

}

?>

            </td>

    </tr>

 

 

    <tr>

      <td style="HEIGHT: 21px" height="21"><p class="style3" align="right">* <span id="lblEmail">Email Address</span>:</p></td>

      <td style="HEIGHT: 21px"><label>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

            <input name="txtEmail" type="text" id="txtEmail" value="<?=$emailadd;?>" title="Enter customer's Email Address here"/>

      </td>

   </tr>

 

 

 

    <tr>

      <td style="HEIGHT: 30px" height="30"><p class="style3" align="right">* <span id="lblReason">Reason for Escalation</span>:</p></td>

      <td style="HEIGHT: 21px">&nbsp;&nbsp;&nbsp;&nbsp;

          <INPUT TYPE='RADIO' name="ddlReason" value="Product Escalation"><label class="style3">Product Escalation</label>

		<INPUT TYPE='RADIO' name="ddlReason" value="Long Hold Time"><label class="style3">Call Hold Times</label>

		<INPUT TYPE='RADIO' name="ddlReason" value="System Down"><label class="style3">System Down</label>

		<INPUT TYPE='RADIO' name="ddlReason" value="Infection" onclick="addSelect();"><label class="style3">Infections/Viruses</label>

   

 <div id="theSelect" style="padding-left:25px;"></div>

 

</td>

   </tr>

 

 

    

    <tr>

      <td style="HEIGHT: 30px" height="25"><p class="style2" align="right">* Description of Issue:</p></td>

      <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

          <textarea name="txtDesc" rows="3" id="txtDesc" style="width:392px;" value="<?=$description;?>" title="Enter the Description of the Issue here"></textarea>

          </td>

    </tr>

<tr>

      <td style="HEIGHT: 30px" height="30"><p class="style2" align="right">* Troubleshooting Steps Performed:</p></td>

      <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

          <textarea name="txtTr" rows="3" id="txtTr" style="width:392px;" value="<?=$troubleshootin;?>" title="Eneter the Troubleshooting steps performed by you here"></textarea>

          </td>

    </tr>

 

    <tr>

      <td height="35">&nbsp;</td>

      <td>&nbsp;</td>

    </tr>

    <tr>

      <td>&nbsp;</td>

      <td><label>&nbsp;

            <input type="submit" name="Submit" id="Submit" value="Submit">

      </label></td>

    </tr>

</form>

</body>

</html>

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Author Comment

by:Shiva_Kumar
ID: 22799384
Everything works fine after adding the <div> however, one small request.  

How do I change the font style of "make a selection" to match with the other labels present in the form.

Thanks
0
 
LVL 82

Expert Comment

by:hielo
ID: 22800458
you can give the select an id OR a class and define the font style in the css at the top of your page - ex:

<style type="text/css">

.formObject{

font-family:Verdana

font-size:10px;

}

</style>
 

and add the class to the select:

var selectList="<select name='myOptions' class='formObject'>\

...
 
 

If you continue to have problems, please open another problem. The original problem has been solved.

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Author Closing Comment

by:Shiva_Kumar
ID: 31509442
Thanks a bunch for all your help.
0
 
LVL 82

Expert Comment

by:hielo
ID: 22833387
Why the lousy grade? Your problem was solved as requested!
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