Pass dataset from select option to javascript function

Hi Experts,

I attempt to send a dataset from an asp loop populated <OPTION> list to a javascript function using an onChange event in the <SELECT> tag, but get only "undefined" as output. What do I miss? heres my code:

<script type="text/javascript">

function UpdatecatPopup(){

var d = document.getElementById('EqCatList');
var _EqcID = d.options[d.selectedIndex].dataset['EqcID'];
var _des = d.options[d.selectedIndex].dataset['des'];
var _bet = d.options[d.selectedIndex].dataset['bet'];
var _descr = d.options[d.selectedIndex].dataset['descr'];
	
	
	document.getElementById('EditEqcID').innerHTML = _EqcID;
	document.getElementById('EditDesignation').value = _des;
	document.getElementById('EditBetegnelse').value = _bet;
	document.getElementById('EditDescription').value = _descr;
}

</script>

<body>

<select id="EqCatList" name="EqCatList" onChange="UpdatecatPopup();" >
<%
do while not EqCatList.EOF
%>
<option data-EqcID="<%=EqCatList("EqCatID")%>" data-EqCatDesignation="'<%=EqCatList("EqCatDesignation")%>'" data-EqCatBetegnelse="'<%=EqCatList("EqCatBetegnelse")%>'" data-EqCatDescription="'<%=EqCatList("EqCatDescription")%>'" onMouseOver="this.style.cursor='pointer';" >
<%=EqCatList("EqCatDesignation")%>
</option>

<%
EqCatList.movenext
loop
%>
</select>

<div id="EditEqcID" name="EditEqcID" class="EqCatinput" ></div><br />
<input type="text" id="EditDesignation" name="EditDesignation" class="EqCatinput" ><br />
<input type="text" id="EditBetegnelse" name="EditBetegnelse" class="EqCatinput" ><br />
<input type="text" id="EditDescription" name="EditDescription" class="EqCatinput" ><br />

</body>

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MortenWBAsked:
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leakim971MultitechnicianCommented:
do a right click on the page, choose view source, post it here
MortenWBAuthor Commented:
Hi leakim971,

thanks for responding:) here comes:



<head>
<!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">
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:27.0) Gecko/20100101 Firefox/27.0<br>Firefox<br>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />

<title>MBRACe Equipment</title>

<link href="MBRACe.css" rel="stylesheet" type="text/css" />


<script type="text/javascript">

function EditList(f){
	document.getElementById('ManageCat').value = f;
	document.forms.listeditor.submit();
}

function UpdatecatPopup(){
//	alert(EqcID + ' ' + des + ' ' + bet + ' ' + descr); 
var d = document.getElementById('EqCatList');
var _EqcID = d.options[d.selectedIndex].dataset['EqcID'];
var _des = d.options[d.selectedIndex].dataset['des'];
var _bet = d.options[d.selectedIndex].dataset['bet'];
var _descr = d.options[d.selectedIndex].dataset['descr'];
	
	
	document.getElementById('EditEqcID').innerHTML = _EqcID;
	document.getElementById('EditDesignation').value = _des;
	document.getElementById('EditBetegnelse').value = _bet;
	document.getElementById('EditDescription').value = _descr;
	document.getElementById('EditEqCat').style.display = 'block';
}

function UpdateEqc(){
	var EqcID, des, bet, descr
	EqcID = document.getElementById('EditEqcID'); 
	des  = document.getElementById('EditDesignation'); 
	bet  = document.getElementById('EditBetegnelse'); 
	descr = document.getElementById('EditDescription'); 
	alert(EqcID.innerHTML + ' ' + des.value + ' ' + bet.value + ' ' + descr.value); 

}
</script>

<form name="listeditor" action="Equipment.asp" method="post">
<input type="hidden" id="ManageCat" name="ManageCat" value="" />
<input type="hidden" id="EditCat" name="EditCat" />
<input type="hidden" id="CompareCat" name="CompareCat" />
<input type="hidden" id="InsertDesignation" name="InsertDesignation" />
<input type="hidden" id="InsertBetegnelse" name="InsertBetegnelse" />
<input type="hidden" id="InsertDescription" name="InsertDescription" />
<input type="hidden" id="DeleteEqCatID" name="DeleteEqCatID" />
</form>




<!-- OPEN RECORDSETS -->


<!-- REQUEST PARAMETERS -->


</head>

<body onLoad="focusEqCatInput();">

<!-- EQUIPMENT CATEGORY UPDATE LIST -->
<div id="UpdateEqCat" style="position:absolute; top:100px; left:20px; display:block;"><h3>Update Equipment Category</h3>

					<select id="EqCatList" name="EqCatList" size="20" class="submitLink" onChange="UpdatecatPopup();" style="text-align:left; width:165px; height:275px; background-color:#CCFFFF;">
						
					<option data-EqcID="27" data-EqCatDesignation="'Adapter'" data-EqCatBetegnelse="'Adapter'" data-EqCatDescription="'Accessorie'" onMouseOver="this.style.cursor='pointer';" >
					Adapter
					</option>

						
					<option data-EqcID="23" data-EqCatDesignation="'Admission'" data-EqCatBetegnelse="'Adgangskort'" data-EqCatDescription="'Access'" onMouseOver="this.style.cursor='pointer';" >
					Admission
					</option>

						
					<option data-EqcID="6" data-EqCatDesignation="'AppleAccessory'" data-EqCatBetegnelse="'AppleTilbehør'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					AppleAccessory
					</option>

						
					<option data-EqcID="5" data-EqCatDesignation="'AppleUnit'" data-EqCatBetegnelse="'AppleEnhed'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					AppleUnit
					</option>

						
					<option data-EqcID="8" data-EqCatDesignation="'AudioMonitor'" data-EqCatBetegnelse="'Højttaler'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					AudioMonitor
					</option>

						
					<option data-EqcID="10" data-EqCatDesignation="'AudioRecorder'" data-EqCatBetegnelse="'Lydoptager'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					AudioRecorder
					</option>

						
					<option data-EqcID="12" data-EqCatDesignation="'AVcombi'" data-EqCatBetegnelse="'AVoptager'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					AVcombi
					</option>

						
					<option data-EqcID="21" data-EqCatDesignation="'BluRayUnit'" data-EqCatBetegnelse="'BluRayEnhed'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					BluRayUnit
					</option>

						
					<option data-EqcID="28" data-EqCatDesignation="'Cable'" data-EqCatBetegnelse="'Kabel'" data-EqCatDescription="'Accessorie'" onMouseOver="this.style.cursor='pointer';" >
					Cable
					</option>

						
					<option data-EqcID="14" data-EqCatDesignation="'CassetteDeck'" data-EqCatBetegnelse="'Casetteudstyr'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					CassetteDeck
					</option>

						
					<option data-EqcID="20" data-EqCatDesignation="'CD-DVDenhed'" data-EqCatBetegnelse="'CD-DVDenhed'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					CD-DVDenhed
					</option>

						
					<option data-EqcID="18" data-EqCatDesignation="'CDunit'" data-EqCatBetegnelse="'CDenhed'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					CDunit
					</option>

						
					<option data-EqcID="7" data-EqCatDesignation="'ComputerMonitor'" data-EqCatBetegnelse="'Computerskærm'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					ComputerMonitor
					</option>

						
					<option data-EqcID="38" data-EqCatDesignation="'CopyPrinter'" data-EqCatBetegnelse="'KopiPrinter'" data-EqCatDescription="'Tool'" onMouseOver="this.style.cursor='pointer';" >
					CopyPrinter
					</option>

						
					<option data-EqcID="32" data-EqCatDesignation="'Dimmer'" data-EqCatBetegnelse="'Lysdæmper'" data-EqCatDescription="'Music'" onMouseOver="this.style.cursor='pointer';" >
					Dimmer
					</option>

						
					<option data-EqcID="39" data-EqCatDesignation="'DiscPrinter'" data-EqCatBetegnelse="'DiskPrinter'" data-EqCatDescription="'Tool'" onMouseOver="this.style.cursor='pointer';" >
					DiscPrinter
					</option>

						
					<option data-EqcID="19" data-EqCatDesignation="'DVDunit'" data-EqCatBetegnelse="'DVDenhed'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					DVDunit
					</option>

						
					<option data-EqcID="42" data-EqCatDesignation="'EffectMachine'" data-EqCatBetegnelse="'Effektmaskine'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					EffectMachine
					</option>

						
					<option data-EqcID="48" data-EqCatDesignation="'Ergonomics'" data-EqCatBetegnelse="'Ergonomi'" data-EqCatDescription="'Mousetrappers, pen tablets aso.'" onMouseOver="this.style.cursor='pointer';" >
					Ergonomics
					</option>

						
					<option data-EqcID="26" data-EqCatDesignation="'HandTool'" data-EqCatBetegnelse="'Håndværktøj'" data-EqCatDescription="'Tool'" onMouseOver="this.style.cursor='pointer';" >
					HandTool
					</option>

						
					<option data-EqcID="36" data-EqCatDesignation="'Inventory'" data-EqCatBetegnelse="'Inventar'" data-EqCatDescription="'Locale'" onMouseOver="this.style.cursor='pointer';" >
					Inventory
					</option>

						
					<option data-EqcID="22" data-EqCatDesignation="'Key'" data-EqCatBetegnelse="'Nøgle'" data-EqCatDescription="'Access'" onMouseOver="this.style.cursor='pointer';" >
					Key
					</option>

						
					<option data-EqcID="25" data-EqCatDesignation="'LabelPrinter'" data-EqCatBetegnelse="'Labelprinter'" data-EqCatDescription="'Tool'" onMouseOver="this.style.cursor='pointer';" >
					LabelPrinter
					</option>

						
					<option data-EqcID="2" data-EqCatDesignation="'Laptop'" data-EqCatBetegnelse="'Bærbar'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					Laptop
					</option>

						
					<option data-EqcID="30" data-EqCatDesignation="'LightingConsole'" data-EqCatBetegnelse="'Lyspult'" data-EqCatDescription="'Stage'" onMouseOver="this.style.cursor='pointer';" >
					LightingConsole
					</option>

						
					<option data-EqcID="3" data-EqCatDesignation="'Mac'" data-EqCatBetegnelse="'Mac'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					Mac
					</option>

						
					<option data-EqcID="4" data-EqCatDesignation="'Macbook'" data-EqCatBetegnelse="'Macbook'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					Macbook
					</option>

						
					<option data-EqcID="31" data-EqCatDesignation="'MixingConsole'" data-EqCatBetegnelse="'Mixerpult'" data-EqCatDescription="'Music'" onMouseOver="this.style.cursor='pointer';" >
					MixingConsole
					</option>

						
					<option data-EqcID="40" data-EqCatDesignation="'MultiFunctionPrinter'" data-EqCatBetegnelse="'MultiFunktionsPrinter'" data-EqCatDescription="'Tool'" onMouseOver="this.style.cursor='pointer';" >
					MultiFunctionPrinter
					</option>

						
					<option data-EqcID="41" data-EqCatDesignation="'MusicInstrument'" data-EqCatBetegnelse="'MusikInstrument'" data-EqCatDescription="'music'" onMouseOver="this.style.cursor='pointer';" >
					MusicInstrument
					</option>

						
					<option data-EqcID="1" data-EqCatDesignation="'PC'" data-EqCatBetegnelse="'PC'" data-EqCatDescription="'IT'" onMouseOver="this.style.cursor='pointer';" >
					PC
					</option>

						
					<option data-EqcID="24" data-EqCatDesignation="'Printer'" data-EqCatBetegnelse="'Printer'" data-EqCatDescription="'Access'" onMouseOver="this.style.cursor='pointer';" >
					Printer
					</option>

						
					<option data-EqcID="35" data-EqCatDesignation="'Projector'" data-EqCatBetegnelse="'Projektor'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					Projector
					</option>

						
					<option data-EqcID="44" data-EqCatDesignation="'Safety'" data-EqCatBetegnelse="'Sikkerhed'" data-EqCatDescription="'Diverse'" onMouseOver="this.style.cursor='pointer';" >
					Safety
					</option>

						
					<option data-EqcID="37" data-EqCatDesignation="'Scanner'" data-EqCatBetegnelse="'Skanner'" data-EqCatDescription="'Tool'" onMouseOver="this.style.cursor='pointer';" >
					Scanner
					</option>

						
					<option data-EqcID="13" data-EqCatDesignation="'SoundCard'" data-EqCatBetegnelse="'Lydkort'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					SoundCard
					</option>

						
					<option data-EqcID="29" data-EqCatDesignation="'StageFixtures'" data-EqCatBetegnelse="'TeaterInventar'" data-EqCatDescription="'Stage'" onMouseOver="this.style.cursor='pointer';" >
					StageFixtures
					</option>

						
					<option data-EqcID="34" data-EqCatDesignation="'StageTechnique'" data-EqCatBetegnelse="'Scenemateriel'" data-EqCatDescription="'Stage'" onMouseOver="this.style.cursor='pointer';" >
					StageTechnique
					</option>

						
					<option data-EqcID="17" data-EqCatDesignation="'TapeRecorder'" data-EqCatBetegnelse="'Båndoptager'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					TapeRecorder
					</option>

						
					<option data-EqcID="33" data-EqCatDesignation="'TheaterLamp'" data-EqCatBetegnelse="'Teaterlampe'" data-EqCatDescription="'Stage'" onMouseOver="this.style.cursor='pointer';" >
					TheaterLamp
					</option>

						
					<option data-EqcID="9" data-EqCatDesignation="'TVmonitor'" data-EqCatBetegnelse="'TVskærm'" data-EqCatDescription="'Audio'" onMouseOver="this.style.cursor='pointer';" >
					TVmonitor
					</option>

						
					<option data-EqcID="15" data-EqCatDesignation="'VHSplayer'" data-EqCatBetegnelse="'VHSafspiller'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					VHSplayer
					</option>

						
					<option data-EqcID="16" data-EqCatDesignation="'VHSrecorder'" data-EqCatBetegnelse="'VHSoptager'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					VHSrecorder
					</option>

						
					<option data-EqcID="11" data-EqCatDesignation="'VideoCam'" data-EqCatBetegnelse="'Videokamera'" data-EqCatDescription="'AV'" onMouseOver="this.style.cursor='pointer';" >
					VideoCam
					</option>

						
                    </select>
</div>

<div id="EditEqCat" style="position:absolute; top:145px; left:220px; display:none;">

<label class="EqCatinput" style="left:-15px; width:100px; text-align:right;">Category ID</label>
<div id="EditEqcID" name="EditEqcID" class="EqCatinput" style="text-align:left; left:100px;	color:#0066FF;">ID</div><br /><br />

<label class="EqCatinput" style="left:-15px; width:100px; text-align:right;">Category designation</label>
<input type="text" id="EditDesignation" name="EditDesignation" class="EqCatinput" onKeyUp="CompareEqc();" style="text-align:left; width:165px;  left:100px; color: #0066FF;
"><br /><br />

<label class="EqCatinput" style="left:-15px; width:100px; text-align:right;">Kategori betegnelse</label>
<input type="text" id="EditBetegnelse" name="EditBetegnelse" class="EqCatinput" style="text-align:left; width:165px; left:100px;"><br /><br />

<label class="EqCatinput" style="left:-15px; width:100px; text-align:right;">Category Description</label>
<input type="text" id="EditDescription" name="EditDescription" class="EqCatinput" style="text-align:left; width:165px; left:100px;"><br /><br />

<input type="button" id="InsertButton" class="EqCatinput" value="Click when ready" onClick="UpdateEqc();" style="text-align:center; width:165px; left:100px; display:block;"><br />


</div>





</body>

</html>

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leakim971MultitechnicianCommented:
why do you have the form inside the head section?
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leakim971MultitechnicianCommented:
Check this page : http://jsfiddle.net/ZY5mu/2/

<select id="EqCatList" name="EqCatList" size="20" class="submitLink" onChange="UpdatecatPopup(this);" style="text-align:left; width:165px; height:275px; background-color:#CCFFFF;">

function UpdatecatPopup(d){
    var o = d.options[d.selectedIndex]
    var _EqcID = o.getAttribute('data-EqcID');
    var _des = o.getAttribute('data-EqCatDesignation');
    var _bet = o.getAttribute('data-EqCatBetegnelse');
    var _descr = o.getAttribute('data-EqCatDescription');
	
	document.getElementById('EditEqcID').innerHTML = _EqcID;
	document.getElementById('EditDesignation').value = _des;
	document.getElementById('EditBetegnelse').value = _bet;
	document.getElementById('EditDescription').value = _descr;
	document.getElementById('EditEqCat').style.display = 'block';
}

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MortenWBAuthor Commented:
Hi again, leakim971

fantastic! works like a charm, allowing the page to work even in IOS Safari (where onclick within the <option> tag did'nt do the trick as it does in other browsers).

And to your question  "why do you have the form inside the head section? " - well, I use it solely for populating hidden fields with assorted javascript functions - so I figured it was not nessecary in the body - are there any considerations I should know about?

But thanks for speedy help :)

Regards
MortenWB
MortenWBAuthor Commented:
Right on the spot!
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