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DOM Question: "Undefined Doc" error

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  #1  
Old August 7th, 2002, 04:50 AM
getchoo getchoo is offline
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DOM Question: "Undefined Doc" error
Hi I'm new to dom and

I'm getting this error on "line 54 doc undefined" I can't figure out what is wrong. Below is my xml and html respectively:
I also attached a zip of my code because I cannot post the whole code on this message.

xml:

<?xml version="1.0"?>
<?xml:stylesheet type="text/xsl" href="mainPage_xsl.xsl" ?>

<computerStore storeName="Mac Store">
<model picture="imac.jpg">
<name>iMac</name>
<package>A</package>
<cpu>600MHz PowerPC G3</cpu>
<memory>128MB SDRAM</memory>
<hd>40GB Ultra ATA drive</hd>
<drive>CD-ROM</drive>
<video>Rage 128 Ultra graphics</video>
<modem>56K internal modem</modem>
<price>799</price>
<tax>0.14</tax>
<shipping>20</shipping>
</model>
.....

html file:

<HTML><HEAD><TITLE>XML DOM Scripting</TITLE>
<XML ID="gigi" SRC="macStore_xml.xml"></XML>
<SCRIPT>


function Compute_Stat(Doc, Which)
{
var Total = 0;
var StudentCount = 0;
var Marks = 0;

var Highest = 0;
var Lowest = 999;
var HighestLastName = "";
var HighestFirstName = "";
var LowestLastName = "";
var LowestFirstName = "";

var Computer = Doc.documentElement.firstChild;
/*while (Student != null)
{
Marks = parseInt(Student.selectSingleNode("Marks").text)
LastName = Student.selectSingleNode("Last").text
FirstName = Student.selectSingleNode("First").text



if (Marks > Highest)
{
Highest = Marks;
HighestFirstName = FirstName;
HighestLastName = LastName;
}
if (Marks < Lowest)
{
Lowest = Marks;
LowestFirstName = FirstName;
LowestLastName = LastName;
}



Total += Marks
Student = Student.nextSibling;
StudentCount++;
}
if (Which == "avg")
return Total/StudentCount;
else if (Which == "high")
return HighestFirstName + " " + HighestLastName + " Marks " + Highest;
else if (Which == "low")
return LowestFirstName + " " + LowestLastName + " Marks " + Lowest;
*/}

var Student = Doc.documentElement.firstChild;
var NameArray = new Array();
var CPUArray = new Array();
var MemoryArray = new Array();
var HDArray = new Array();
var DriveArray = new Array();
var VideoArray = new Array();
var ModemArray = new Array();
var PriceArray = new Array();

function LoadArrays(Doc)
{
var Count = 0;
var LastName;

var Computer = Doc.documentElement.firstChild;
while (Computer != null)
{
Name = Computer.selectSingleNode("name").text
CPU = Computer.selectSingleNode("cpu").text
Memory= Computer.selectSingleNode("memory").text
HD = Computer.selectSingleNode("hd").text
Drive= Computer.selectSingleNode("drive").text
Video= Computer.selectSingleNode("video").text
Modem= Computer.selectSingleNode("modem").text
Price = parseInt(Computer.selectSingleNode("price").text)

NameArray[Count] = "<TD>" + Name + "</TD>"
NameArray[Count] += "<TD>" + CPU + "</TD>"
NameArray[Count] += "<TD>" + Memory + "</TD>"
NameArray[Count] += "<TD>" + HD + "</TD>"
NameArray[Count] += "<TD>" + Drive + "</TD>"
NameArray[Count] += "<TD>" + Video + "</TD>"
NameArray[Count] += "<TD>" + Modem + "</TD>"
NameArray[Count] += "<TD>" + Price + "</TD>"

CPUArray[Count] = "<TD>" + CPU + "</TD>"
CPUArray[Count] += "<TD>" + Name + "</TD>"
CPUArray[Count] += "<TD>" + Memory + "</TD>"
CPUArray[Count] += "<TD>" + HD + "</TD>"
CPUArray[Count] += "<TD>" + Drive + "</TD>"
CPUArray[Count] += "<TD>" + Video + "</TD>"
CPUArray[Count] += "<TD>" + Modem + "</TD>"
CPUArray[Count] += "<TD>" + Price + "</TD>"


MemoryArray[Count] = "<TD>" + Memory + "</TD>"
MemoryArray[Count] += "<TD>" + CPU + "</TD>"
MemoryArray[Count] += "<TD>" + Name + "</TD>"
MemoryArray[Count] += "<TD>" + HD + "</TD>"
MemoryArray[Count] += "<TD>" + Drive + "</TD>"
MemoryArray[Count] += "<TD>" + Video + "</TD>"
MemoryArray[Count] += "<TD>" + Modem + "</TD>"
MemoryArray[Count] += "<TD>" + Price + "</TD>"

/*HDArray[Count] +=
DriveArray[Count] +=
VideoArray[Count] +=
PriceArray[Count] +=*/

Count++;
Computer = Computer.nextSibling;
}
}

function SortStats(How)
{
var Result = "";
var Prev = "";

Result += "<TABLE border=1 align=center>"

if (How == "Name")
{
NameArray.sort();
for (i = 0; i < NameArray.length; i++)
{
Result += "<TR>" + NameArray[i] + "</TR>"
Prev = NameArray[i];
}
}

if (How == "CPU")
{
CPUArray.sort();
for (i = 0; i < CPUArray.length; i++)
{
Result += "<TR>" + CPUArray[i] + "</TR>"
Prev = CPUArray[i];
}
}

if (How == "Memory")
{
MemoryArray.sort();
for (i = 0; i < MemoryArray.length; i++)
{
Result += "<TR>" + MemoryArray[2] + "</TR>"
Prev = MemoryArray[i];
}
}

Result += "</TABLE>"
return Result;
}
</SCRIPT>
</HEAD>
<BODY STYLE="font-family:Verdana;" ONLOAD="LoadArrays(gigi)">
<table width="100%">
<tr>
<td style="border: #999999 1px solid;"><TABLE align="center">
<TR>
<TD colspan="3" ALIGN=CENTER> <table width="100%" border="0">
<tr>
<td style="border: #999999 1px solid;"><div align="center"><strong>Apple
Store</strong></div></td>
</tr>
</table>
</TR>
<TR>
<!--<TD ALIGN=CENTER><input name="BUTTON" type=BUTTON onClick="ResultDiv.innerHTML = 'Highest Mark: ' + Compute_Stat(CISY2412Source, 'high')" value="Highest Mark"/>
<TD ALIGN=CENTER><input name="BUTTON22" type=BUTTON onClick="ResultDiv.innerHTML = 'Lowest Mark: ' + Compute_Stat(CISY2412Source, 'low')" value="Lowest Mark"/>
<TD ALIGN=CENTER><input name="BUTTON23" type=BUTTON onClick="ResultDiv.innerHTML = 'Average Mark: ' + Compute_Stat(CISY2412Source, 'avg')" value="Average Mark"/>--></TR>
<TR>
<TD ALIGN=CENTER><INPUT name="BUTTON1" TYPE=BUTTON ONCLICK="ResultDiv.innerHTML = SortStats('Name')" VALUE="Sort by Student Name"/>
&nbsp;
<TD ALIGN=CENTER><INPUT name="BUTTON2" TYPE=BUTTON ONCLICK="ResultDiv.innerHTML = SortStats('CPU')" VALUE="Sort by Instructor"/>
&nbsp;
<TD ALIGN=CENTER><INPUT name="BUTTON3" TYPE=BUTTON ONCLICK="ResultDiv.innerHTML = SortStats('Memory')" VALUE="Sort by Program"/>
</TR>
</TABLE></td>
</tr>
</table>
<BR>
<DIV ID=ResultDiv></DIV>
</BODY>
</HTML>

Please help

getchoo
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  #2  
Old August 7th, 2002, 05:15 AM
getchoo getchoo is offline
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forgot to attach file
whoops forgot to attach file
Attached Files
File Type: zip macstore_xml_and_html.zip (2.3 KB, 279 views)
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  #3  
Old August 7th, 2002, 05:19 AM
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Hi, could you please mark line 54? To be honest I'm not in the mood to count lines
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  #4  
Old August 7th, 2002, 05:56 AM
getchoo getchoo is offline
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ok here are lines marked
Sorry about that I wasn't sure u want me to marke the pasted code or rezipped the files with the marked lines so I did both

<HTML><HEAD><TITLE>XML DOM Scripting</TITLE>
<XML ID="gigi" SRC="macStore_xml.xml"></XML>
<SCRIPT>


function Compute_Stat(Doc, Which)
{
var Total = 0;
var StudentCount = 0;
var Marks = 0;

var Highest = 0;
var Lowest = 999;
var HighestLastName = "";
var HighestFirstName = "";
var LowestLastName = "";
var LowestFirstName = "";

var Computer = Doc.documentElement.firstChild;
/*while (Student != null)
{
Marks = parseInt(Student.selectSingleNode("Marks").text)
LastName = Student.selectSingleNode("Last").text
FirstName = Student.selectSingleNode("First").text



if (Marks > Highest)
{
Highest = Marks;
HighestFirstName = FirstName;
HighestLastName = LastName;
}
if (Marks < Lowest)
{
Lowest = Marks;
LowestFirstName = FirstName;
LowestLastName = LastName;
}



Total += Marks
Student = Student.nextSibling;
StudentCount++;
}
if (Which == "avg")
return Total/StudentCount;
else if (Which == "high")
return HighestFirstName + " " + HighestLastName + " Marks " + Highest;
else if (Which == "low")
return LowestFirstName + " " + LowestLastName + " Marks " + Lowest;
*/}

var Computer = Doc.documentElement.firstChild;/*Doc undefined Line 54*/

var NamesArray = new Array();
var CPUArray = new Array();
var MemoryArray = new Array();
var HDArray = new Array();
var DriveArray = new Array();
var VideoArray = new Array();
var ModemArray = new Array();
var PriceArray = new Array();

function LoadArrays(Doc)
{
var Count = 0;
//var LastName;
var Computer = Doc.documentElement.firstChild;//line69 object required.
while (Computer != null)
{
Name = Computer.selectSingleNode("name").text
CPU = Computer.selectSingleNode("cpu").text
Memory= Computer.selectSingleNode("memory").text
HD = Computer.selectSingleNode("hd").text
Drive= Computer.selectSingleNode("drive").text
Video= Computer.selectSingleNode("video").text
Modem= Computer.selectSingleNode("modem").text
Price = parseInt(Computer.selectSingleNode("price").text)

NamesArray[Count] = "<TD>" + Name + "</TD>"
NamesArray[Count] += "<TD>" + CPU + "</TD>"
NamesArray[Count] += "<TD>" + Memory + "</TD>"
NamesArray[Count] += "<TD>" + HD + "</TD>"
NamesArray[Count] += "<TD>" + Drive + "</TD>"
NamesArray[Count] += "<TD>" + Video + "</TD>"
NamesArray[Count] += "<TD>" + Modem + "</TD>"
NamesArray[Count] += "<TD>" + Price + "</TD>"

CPUArray[Count] = "<TD>" + CPU + "</TD>"
CPUArray[Count] += "<TD>" + Name + "</TD>"
CPUArray[Count] += "<TD>" + Memory + "</TD>"
CPUArray[Count] += "<TD>" + HD + "</TD>"
CPUArray[Count] += "<TD>" + Drive + "</TD>"
CPUArray[Count] += "<TD>" + Video + "</TD>"
CPUArray[Count] += "<TD>" + Modem + "</TD>"
CPUArray[Count] += "<TD>" + Price + "</TD>"


MemoryArray[Count] = "<TD>" + Memory + "</TD>"
MemoryArray[Count] += "<TD>" + CPU + "</TD>"
MemoryArray[Count] += "<TD>" + Name + "</TD>"
MemoryArray[Count] += "<TD>" + HD + "</TD>"
MemoryArray[Count] += "<TD>" + Drive + "</TD>"
MemoryArray[Count] += "<TD>" + Video + "</TD>"
MemoryArray[Count] += "<TD>" + Modem + "</TD>"
MemoryArray[Count] += "<TD>" + Price + "</TD>"

/*HDArray[Count] +=
DriveArray[Count] +=
VideoArray[Count] +=
PriceArray[Count] +=*/

Count++;
Computer = Computer.nextSibling;
}
}

function SortStats(How)
{
var Result = "";
var Prev = "";

Result += "<TABLE border=1 align=center>"

if (How == "Name")
{
NamesArray.sort();
for (i = 0; i < NamesArray.length; i++)
{
Result += "<TR>" + NamesArray[i] + "</TR>"
Prev = NamesArray[i];
}
}

if (How == "CPU")
{
CPUArray.sort();
for (i = 0; i < CPUArray.length; i++)
{
Result += "<TR>" + CPUArray[i] + "</TR>"
Prev = CPUArray[i];
}
}

if (How == "Memory")
{
MemoryArray.sort();
for (i = 0; i < MemoryArray.length; i++)
{
Result += "<TR>" + MemoryArray[2] + "</TR>"
Prev = MemoryArray[i];
}
}

Result += "</TABLE>"
return Result;
}
</SCRIPT>
</HEAD>
<BODY STYLE="font-family:Verdana;" ONLOAD="LoadArrays(gigi)">
<table width="100%">
<tr>
<td style="border: #999999 1px solid;"><TABLE align="center">
<TR>
<TD colspan="3" ALIGN=CENTER> <table width="100%" border="0">
<tr>
<td style="border: #999999 1px solid;"><div align="center"><strong>Apple
Store</strong></div></td>
</tr>
</table>
</TR>
<TR>
<!--<TD ALIGN=CENTER><input name="BUTTON" type=BUTTON onClick="ResultDiv.innerHTML = 'Highest Mark: ' + Compute_Stat(CISY2412Source, 'high')" value="Highest Mark"/>
<TD ALIGN=CENTER><input name="BUTTON22" type=BUTTON onClick="ResultDiv.innerHTML = 'Lowest Mark: ' + Compute_Stat(CISY2412Source, 'low')" value="Lowest Mark"/>
<TD ALIGN=CENTER><input name="BUTTON23" type=BUTTON onClick="ResultDiv.innerHTML = 'Average Mark: ' + Compute_Stat(CISY2412Source, 'avg')" value="Average Mark"/>--></TR>
<TR>
<TD ALIGN=CENTER><INPUT name="BUTTON1" TYPE=BUTTON ONCLICK="ResultDiv.innerHTML = SortStats(gigi,'Name')" VALUE="Sort by Name"/>
&nbsp;
<TD ALIGN=CENTER><INPUT name="BUTTON2" TYPE=BUTTON ONCLICK="ResultDiv.innerHTML = SortStats(gigi,'CPU')" VALUE="Sort by CPU"/>
&nbsp;
<TD ALIGN=CENTER><INPUT name="BUTTON3" TYPE=BUTTON ONCLICK="ResultDiv.innerHTML = SortStats(gigi,'Memory')" VALUE="Sort by Memory"/>
</TR>
</TABLE></td>
</tr>
</table>
<BR>
<DIV ID=ResultDiv></DIV>
</BODY>
</HTML>
Attached Files
File Type: zip xml_html.zip (2.3 KB, 289 views)
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  #5  
Old August 7th, 2002, 06:10 AM
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Mirax Mirax is offline
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First, please post code in vB code 'blocks' next time
Furthermore, using tabs is a good way to check your loops and if-statements (for correct closure)
Code:
function Compute_Stat(Doc, Which)
{
	var Total = 0;
	var StudentCount = 0;
	var Marks = 0;
	
	var Highest = 0;
	var Lowest = 999;
	var HighestLastName = "";
	var HighestFirstName = "";
	var LowestLastName = "";
	var LowestFirstName = "";
	
	var Computer = Doc.documentElement.firstChild;
	/*while (Student != null)
	{
		Marks = parseInt(Student.selectSingleNode("Marks").text)
		LastName = Student.selectSingleNode("Last").text
		FirstName = Student.selectSingleNode("First").text

		if (Marks > Highest)
		{
			Highest = Marks;
			HighestFirstName = FirstName;
			HighestLastName = LastName;
		}
		if (Marks < Lowest)
		{
			Lowest = Marks;
			LowestFirstName = FirstName;
			LowestLastName = LastName;
		}
		Total += Marks
		Student = Student.nextSibling;
		StudentCount++;
	}
	if (Which == "avg")
		return Total/StudentCount;
	else if (Which == "high")
		return HighestFirstName + " " + HighestLastName + " Marks " + Highest;
	else if (Which == "low")
		return LowestFirstName + " " + LowestLastName + " Marks " + Lowest;
	*/
}

var Computer = Doc.documentElement.firstChild;/*Doc undefined Line 54*/
var NamesArray = new Array();
var CPUArray = new Array();
var MemoryArray = new Array();
var HDArray = new Array();
var DriveArray = new Array();
var VideoArray = new Array();
var ModemArray = new Array();
var PriceArray = new Array();

function LoadArrays(Doc)
{

...

Those vars (line 54 and below) are outside the function above it and like ther erros says, Doc is undefined outside that function if I saw it right. Besides, you have that lin (var Computer = Doc.documentElement.firstChild twice in your script.. once inside the function (right before the comment) and one below it
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  #6  
Old August 7th, 2002, 03:02 PM
getchoo getchoo is offline
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Hi

How do I place vb blocks to preserve formatting of code. Secondly I tried remove the first occurence of
var Computer = Doc.documentElement.firstChild;

but I get "doc" is undefined in the second occurence of
var Computer = Doc.documentElement.firstChild;

how do I fix this problem

thanx

getchoo
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  #7  
Old August 7th, 2002, 03:19 PM
getchoo getchoo is offline
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Thanx
Hi

I just figure out what u meant, and it solve the problem.

thanks

getchoo
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  #8  
Old August 7th, 2002, 03:36 PM
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Mirax Mirax is offline
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Great

About the vB code and 'code'-fields:
http://forums.devshed.com/misc.php?action=bbcode

[ CODE ](without the spaces)[ /CODE ]
[ PHP ](without the spaces)[ /PHP ]
[ QUOTE ](without the spaces)[ /QUOTE ]

is what you need -> it makes the code much clearer for people to read
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