Question

Generate form fields from a drop down menu

Asked by: InnerChild

Initially I had the following questions going http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_23335795.html#discussion
What this solution provides is that when a person selects a number in the drop down then some form elements are dynamically created.

The problem I am having is that when submitting the form the only information that is being parsed is the number that is selected and not the information that is entered into the text boxes.

Also I now need to add a radio group as well to the group of elements that are created.

So as an example......

A Person clicks on 2 in the drop down then the fields that need to be dynamically created are...
Person 1 name
Person 1 email
Person 1 radio group
option 1
option 2
option 3

Person 2 name
Person 2 email
Person 2 radio group
option 1
option 2
option 3

And all the information entered submitted (name, email, and the option chosen) via email.
Thanks,

IC

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
	"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link href="/style.css" rel="stylesheet" type="text/css" />
<title>Custom contact page</title>
<script type="text/javascript">
function chkContacts(ele) {
	var div = document.getElementById('contactList');
	div.innerHTML = "";
	for (var i=1; i<=ele; i++) {
		addContact(i, div);
	}
	div.style.display = "";
}
function addContact(num, div) {
	var contact = document.createElement('p');
	var textName = document.createTextNode('Contact #' + num + ' Name: \n');
	var contactName = document.createElement('input');
	contactName.type = 'text';
	contactName.name = 'contactName' + num;
	contactName.id = 'contactName' + num;
	var br = document.createElement('br');
	var textEmail = document.createTextNode('Contact #' + num + ' Email: \n');
	var contactEmail = document.createElement('input');
	contactEmail.type = 'text';
	contactEmail.name = 'contactEmail' + num;
	contactEmail.id = 'contactEmail' + num;
	contact.appendChild(textName);
	contact.appendChild(contactName);
	contact.appendChild(br);
	contact.appendChild(textEmail);
	contact.appendChild(contactEmail);
	div.appendChild(contact);
}
</script>
</head>
 
<body>
<h3>Page for contact info</h3>
 
<br /><br />
<form action="contact.php" method="post" />
Select number of contacts:
<select name="nContacts" onchange="chkContacts(this.value);">
<option value="0">--Choose--</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
</select>
<br /><br />
<div id="contactList" style="display: none;"></div>
<br /><br />
<input type="submit" value="Send" />
</form>
 
 
</body>
</html>

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Asked On: 2008-04-28 at 10:59:32ID23359587
Tags: Java Script, Ajax, PHP
Topic: JavaScript
Participating Experts: 1
Points: 100
Comments: 10

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Answers

by: InnerChildPosted on 2008-04-28 at 11:53:51ID: 21456582

OK I have been working away and I can pass the infomration along but it is tedious beause the form element name is attached dynamically as well so as an example if I have a form element that is txtFirstName in my PHP I have to pass the following varialbes to catch everything...

txtFirstName1
txtFirstName2
txtFirstName3
txtFirstName4
txtFirstName5
txtFirstName6
txtFirstName7
txtFirstName8

which also generates a mostly empty email.

Now I was also able to scratch together a radio function but the problem I am having with that is that is that it is acting as one giant raio group. I could switch it to another drop down if that makes things easier.

Hope this helps,

IC

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
	"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link href="/style.css" rel="stylesheet" type="text/css" />
<title>Custom contact page</title>
<script type="text/javascript">
function chkContacts(ele) {
	var div = document.getElementById('contactList');
	div.innerHTML = "";
	for (var i=1; i<=ele; i++) {
		addContact(i, div);
	}
	div.style.display = "";
}
function addContact(num, div) {
	var contact = document.createElement('p');
	var textName1 = document.createTextNode('#' + num + ' Last Name: \n\n');
	var contactLastName = document.createElement('input');
	contactLastName.type = 'text';
	contactLastName.name = 'contactLastName' + num;
	contactLastName.id = 'contactLastName' + num;
	var br = document.createElement('br');
	
	var textName = document.createTextNode('#' + num + ' First Name: \n');
	var contactFirstName = document.createElement('input');
	contactFirstName.type = 'text';
	contactFirstName.name = 'contactFirstName' + num;
	contactFirstName.id = 'contactFirstName' + num;
	var br = document.createElement('br');
	
	var textEmail = document.createTextNode('#' + num + ' Email: \n');
	var contactEmail = document.createElement('input');
	contactEmail.type = 'text';
	contactEmail.name = 'contactEmail' + num;
	contactEmail.id = 'contactEmail' + num;
	
	var textRadio = document.createTextNode('#' + num + ' Score: \n');
	var contactRadio = document.createElement('input');
	contactRadio.type = 'radio';
	contactRadio.id ="myradiobutton";
	contactRadio.name ="myradiobutton";
    contactRadio.onclick = function() { enableRadio('1') };
	
	var textRadio2 = document.createTextNode('#' + num + ' Score2: \n');
	var contactRadio2 = document.createElement('input');
	contactRadio2.type = 'radio';
	contactRadio2.id ="myradiobutton";
	contactRadio2.name ="myradiobutton";
    contactRadio2.onclick = function() { enableRadio('2') };
	
   	contact.appendChild(textRadio);
	contact.appendChild(contactRadio);
 
	   	contact.appendChild(textRadio2);
	contact.appendChild(contactRadio2);
	
				//br
	var br=document.createElement("br");
	contact.appendChild(br);
	
	contact.appendChild(textName);
	contact.appendChild(contactLastName);
			//br
	var br=document.createElement("br");
	contact.appendChild(br);
	
	contact.appendChild(textName1);
	contact.appendChild(contactFirstName);
			//br
	var br=document.createElement("br");
	contact.appendChild(br);
	
	contact.appendChild(textEmail);
	contact.appendChild(contactEmail);
	div.appendChild(contact);
}
</script>
<style type="text/css">
<!--
body {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
}
#contactList{
	text-align: right;
}
-->
</style>
</head>
<body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<form  action="contact.php" method="POST">
  <table border="1" cellpadding="5">
    <tr>
      <td colspan="2"><table class="Normal" cellSpacing="0" cellPadding="2" width="100%" border="0">
          <tr>
            <td width="300" align="right">Last Name: </td>
            <td align="left" vAlign="top"><input type="text" name="txtLastName" id="txtLastName"></td>
          </tr>
          <tr>
            <td align="right">First Name: </td>
            <td vAlign="top"><input type="text" name="txtFirstName" id="txtFirstName"></td>
          </tr>
          <tr>
            <td align="right">Mailing Address: </td>
            <td vAlign="top"><textarea name="textareaMailing" id="textareaMailing" cols="45" rows="5"></textarea></td>
          </tr>
          <tr>
            <td align="right">City: </td>
            <td vAlign="top"><input type="text" name="txtCity" id="txtCity"></td>
          </tr>
          <tr>
            <td align="right">Province: </td>
            <td vAlign="top"><select name="ddProvince" id="ddProvince">
                <option value="54">Alberta</option>
                <option value="55">British Columbia</option>
                <option value="56">Manitoba</option>
                <option value="57">New Brunswick</option>
                <option value="58">Newfoundland</option>
                <option value="59">Nova Scotia</option>
                <option value="60">Ontario</option>
                <option value="61">Prince Edward Island</option>
                <option value="62">Quebec</option>
                <option value="63">Saskatchewan</option>
                <option value="188">Northwest Territories</option>
                <option value="189">Nunavut</option>
                <option value="190">Yukon</option>
              </select></td>
          </tr>
          <tr>
            <td align="right">Postal Code: </td>
            <td vAlign="top"><input type="text" name="txtPostal" id="txtPostal"></td>
          </tr>
          <tr>
            <td align="right">Employer: </td>
            <td vAlign="top"><input type="text" name="txtEmployeer" id="txtEmployeer"></td>
          </tr>
          <tr>
            <td align="right">Position Title: </td>
            <td vAlign="top"><input type="text" name="txtPositionTitle" id="txtPositionTitle"></td>
          </tr>
          <tr>
            <td align="right">Business Phone: </td>
            <td vAlign="top"><input type="text" name="txtBusinessPhone" id="txtBusinessPhone">
              &nbsp;&nbsp;</td>
          </tr>
          <tr>
            <td align="right">Email Address: </td>
            <td vAlign="top"><input type="text" name="txtEmail" id="txtEmail"></td>
          </tr>
        </table></td>
    </tr>
    <tr>
      <td colspan="2"><TABLE class="Normal" width="100%" border="0">
          <TR>
            <TD width="300" align="right" vAlign="top" class="Normal">Please indicate your 
              usual 18-hole golf score below:</TD>
            <TD vAlign="top" align="left" width="170"><table id="ucContent2__ctl0_ucModuleContent__ctl0__ctl0_rblScore" class="Normal" border="0">
                <tr>
                  <td><p>
                    <label>
                      <input name="GolfScore" type="radio" id="GolfScore_0" value="Never Played" checked>
                      Never Played</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="Played a few times" id="GolfScore_1">
                      Played a few times</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="120+" id="GolfScore_2">
                      120+</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="111-120" id="GolfScore_3">
                      111-120</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="101-110" id="GolfScore_4">
                      101-110</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="90-100" id="GolfScore_5">
                      90-100</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="Under 90 (Please specify)" id="GolfScore_6">
                      Under 90 (Please specify)</label>
                    <br>
                  </p></td>
                </tr>
              </table></TD>
            <TD vAlign="bottom" align="left"><input name="txtGolfScore" type="text" id="Over90" /></TD>
          </TR>
        </TABLE></td>
    </tr>
    <tr>
      <td colspan="2">How many other people are you registering?</td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><select name="nContacts" onchange="chkContacts(this.value);">
        <option value="0">--Choose--</option>
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
        <option value="4">4</option>
        <option value="5">5</option>
        <option value="6">6</option>
        <option value="7">7</option>
        <option value="8">8</option>
      </select>
        <br />
        <br />
        <div id="contactList" style="display: none;"></div>
        <br />
        <br /></td>
    </tr>
    <tr>
      <td colspan="2"><div align="right">
          <input name="RSVP" type="submit" class="formbutton11" value="Submit" />
        </div></td>
    </tr>
  </table>
</form>
</body>
</html>

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Select all Open in new window

by: InnerChildPosted on 2008-04-29 at 08:28:49ID: 21463183

So I have made some changes and the following code uses a dropdown instead of radio buttons. But the script I am using http://www.agitprop.org.au/scripts/catchall_mail_php.php that is suppose to catch any form fields isn't displaying the drop down options....

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
	"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link href="/style.css" rel="stylesheet" type="text/css" />
<title>Custom contact page</title>
<script type="text/javascript">
function chkContacts(ele) {
	var div = document.getElementById('contactList');
	div.innerHTML = "";
	for (var i=1; i<=ele; i++) {
		addContact(i, div);
	}
	div.style.display = "";
}
function addContact(num, div) {
	var contact = document.createElement('p');
	var textName1 = document.createTextNode('#' + num + ' Last Name: \n\n');
	var contactLastName = document.createElement('input');
	contactLastName.type = 'text';
	contactLastName.name = 'contactLastName' + num;
	contactLastName.id = 'contactLastName' + num;
	var br = document.createElement('br');
	
	var textName = document.createTextNode('#' + num + ' First Name: \n');
	var contactFirstName = document.createElement('input');
	contactFirstName.type = 'text'; 
	contactFirstName.name = 'contactFirstName' + num;
	contactFirstName.id = 'contactFirstName' + num;
	var br = document.createElement('br');
	
	//dynamic creation of the email element
	var textEmail = document.createTextNode('#' + num + ' Email: \n');
	var contactEmail = document.createElement('input');
	contactEmail.type = 'text';
	contactEmail.name = 'contactEmail' + num;
	contactEmail.id = 'contactEmail' + num;
	
	//dynamic creation of the drop down element
	var textSelect = document.createTextNode('#' + num + ' Golf Score: \n');
	var oSelect=document.createElement("select");
	var oOption = document.createElement("option");
	var t0 = document.createTextNode("Option 1");
	oOption.id = 'oOption' + num;
	
	var oOption1 = document.createElement("option");
	var t1 = document.createTextNode("Option 2);
 
	
	// adds options to the drop down menu
	
	oOption.appendChild(t0);
	oOption1.appendChild(t1);
	oSelect.appendChild(oOption);
	oSelect.appendChild(oOption1);
 
	
	
	// add options to form
	contact.appendChild(textSelect);
	contact.appendChild(oSelect);
	
				//br
	var br=document.createElement("br");
	contact.appendChild(br);
	
	contact.appendChild(textName);
	contact.appendChild(contactLastName);
			//br
	var br=document.createElement("br");
	contact.appendChild(br);
	
	contact.appendChild(textName1);
	contact.appendChild(contactFirstName);
			//br
	var br=document.createElement("br");
	contact.appendChild(br);
	
	contact.appendChild(textEmail);
	contact.appendChild(contactEmail);
	div.appendChild(contact);
}
</script>
<style type="text/css">
<!--
body {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
}
#contactList{
	text-align: right;
}
-->
</style>
</head>
<body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<form  action="catchall_mail.php" method="POST">
  <table border="1" cellpadding="5">
    <tr>
      <td colspan="2"><table class="Normal" cellSpacing="0" cellPadding="2" width="100%" border="0">
          <tr>
            <td width="300" align="right">Last Name: </td>
            <td align="left" vAlign="top"><input type="text" name="txtLastName" id="txtLastName"></td>
          </tr>
          <tr>
            <td align="right">First Name: </td>
            <td vAlign="top"><input type="text" name="txtFirstName" id="txtFirstName"></td>
          </tr>
          <tr>
            <td align="right">Mailing Address: </td>
            <td vAlign="top"><textarea name="textareaMailing" id="textareaMailing" cols="45" rows="5"></textarea></td>
          </tr>
          <tr>
            <td align="right">City: </td>
            <td vAlign="top"><input type="text" name="txtCity" id="txtCity"></td>
          </tr>
          <tr>
            <td align="right">Province: </td>
            <td vAlign="top"><select name="ddProvince" id="ddProvince">
                <option value="Alberta">Alberta</option>
                <option value="British Columbia">British Columbia</option>
                <option value="Manitoba">Manitoba</option>
                <option value="New Brunswick">New Brunswick</option>
                <option value="Newfoundland">Newfoundland</option>
                <option value="Nova Scotia">Nova Scotia</option>
                <option value="Ontario">Ontario</option>
                <option value="Prince Edward Island">Prince Edward Island</option>
                <option value="Quebec">Quebec</option>
                <option value="Saskatchewan">Saskatchewan</option>
                <option value="Northwest Territories">Northwest Territories</option>
                <option value="Nunavut">Nunavut</option>
                <option value="Yukon">Yukon</option>
              </select></td>
          </tr>
          <tr>
            <td align="right">Postal Code: </td>
            <td vAlign="top"><input type="text" name="txtPostal" id="txtPostal"></td>
          </tr>
          <tr>
            <td align="right">Employer: </td>
            <td vAlign="top"><input type="text" name="txtEmployeer" id="txtEmployeer"></td>
          </tr>
          <tr>
            <td align="right">Position Title: </td>
            <td vAlign="top"><input type="text" name="txtPositionTitle" id="txtPositionTitle"></td>
          </tr>
          <tr>
            <td align="right">Business Phone: </td>
            <td vAlign="top"><input type="text" name="txtBusinessPhone" id="txtBusinessPhone">
              &nbsp;&nbsp;</td>
          </tr>
          <tr>
            <td align="right">Email Address: </td>
            <td vAlign="top"><input type="text" name="txtEmail" id="txtEmail"></td>
          </tr>
        </table></td>
    </tr>
    <tr>
      <td colspan="2"><TABLE class="Normal" width="100%" border="0">
          <TR>
            <TD width="300" align="right" vAlign="top" class="Normal">Please indicate your 
              usual 18-hole golf score below:</TD>
            <TD vAlign="top" align="left" width="170"><table id="table" class="Normal" border="0">
                <tr>
                  <td><p>
                    <label>
                      <input name="GolfScore" type="radio" id="GolfScore_0" value="Never Played" checked>
                      Never Played</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="Played a few times" id="GolfScore_1">
                      Played a few times</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="120+" id="GolfScore_2">
                      120+</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="111-120" id="GolfScore_3">
                      111-120</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="101-110" id="GolfScore_4">
                      101-110</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="90-100" id="GolfScore_5">
                      90-100</label>
                    <br>
                    <label>
                      <input type="radio" name="GolfScore" value="Under 90 (Please specify)" id="GolfScore_6">
                      Under 90 (Please specify)</label>
                    <br>
                  </p></td>
                </tr>
              </table></TD>
            <TD vAlign="bottom" align="left"><input name="txtGolfScore" type="text" id="Over90" /></TD>
          </TR>
        </TABLE></td>
    </tr>
    <tr>
      <td colspan="2">How many other people are you registering?</td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><select name="nContacts" onchange="chkContacts(this.value);">
        <option value="0">--Choose--</option>
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
        <option value="4">4</option>
        <option value="5">5</option>
        <option value="6">6</option>
        <option value="7">7</option>
        <option value="8">8</option>
      </select>
        <br />
        <br />
        <div id="contactList" style="display: none;"></div>
        <br />
        <br /></td>
    </tr>
    <tr>
      <td colspan="2"><div align="right">
          <input name="RSVP" type="submit" class="formbutton11" value="Submit" />
        </div></td>
    </tr>
  </table>
</form>
</body>
</html>

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Select all Open in new window

by: b0lsc0ttPosted on 2008-04-29 at 18:33:31ID: 21467539

Does the email come to you at all? Does it have any info from the form? I don't really understand if your message is just missing the option or if there is some other issue.

Thanks for clearing it up.

bol

by: InnerChildPosted on 2008-04-29 at 20:00:46ID: 21467822

Everything in the form gets sent in the email except for the drop down after you select the number of people registering.

So if you say one person is registering there is a drop down plus a text feild for name and email. THe text fields get emails but the option selected in the drop down doesn't.

Hope that helps.

IC

by: b0lsc0ttPosted on 2008-04-30 at 00:04:31ID: 21468619

Is it the nContacts value that doesn't appear? It showed in my test. I did see an error in your code on line 48 above.

var t1 = document.createTextNode("Option 2");

That may be your problem. Otherwise look for an nContacts part in the email and that is from the list. The value should be there too.

Do you get the Province value?

bol

by: InnerChildPosted on 2008-04-30 at 06:36:40ID: 21470543

Yes I get everything except the vart0 "Option 1" and the var t1 "Option 2"

IC

by: InnerChildPosted on 2008-04-30 at 10:30:28ID: 21472832

So just to confirm I am getting the number of people selected in the nContacts variable but when you select lets say one person you get four more form fields for first name, last name email, and a dropdown for golf score. All the infoamriton is being emailed except the drop down for the golf score.

IC

by: b0lsc0ttPosted on 2008-04-30 at 16:20:44ID: 21475394

I wish the problem would've been more clear from the start. I had assumed you were talking about nContacts since that was the main pull down related to this. Thanks for correcting that error and providing info so I knew the problem.

You are not getting the golf score because the select that is made doesn't have a name and the options didn't have values. There was nothing being sent in the form for that field.

I have corrected it in the code below. Of course you can use whatever you want for the name in the selects and values in the option tags. The key is to make sure you specify one so the form will have it.

Let me know if you have a question or need more info.

bol

	//dynamic creation of the drop down element
	var textSelect = document.createTextNode('#' + num + ' Golf Score: \n');
	var oSelect=document.createElement("select");
	oSelect.name = "golfScore" + num;
	oSelect.id = "golfScore" + num;
	var oOption1 = document.createElement("option");
	var t0 = document.createTextNode("Option 1");
	oOption1.value = 'oOption1';
	
	var oOption2 = document.createElement("option");
	var t1 = document.createTextNode("Option 2");
	oOption2.value = "oOption2";
 
	
	// adds options to the drop down menu
	
	oOption1.appendChild(t0);
	oOption2.appendChild(t1);
	oSelect.appendChild(oOption1);
	oSelect.appendChild(oOption2);

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Select all Open in new window

by: InnerChildPosted on 2008-04-30 at 16:44:07ID: 31453100

Thanks, the form is working properly now.

IC

by: b0lsc0ttPosted on 2008-04-30 at 18:37:34ID: 21475939

Great! I'm glad I could help and we got it working. Thanks for the grade, the points and the fun question.

bol

20120131-EE-VQP-002

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