Question

Loop Through ChildNodes and Create Array

Asked by: greddin

I would like to be able to create VBscript function that takes in one parameter. Maybe something like this:

createArray(id)

Given the xml sample file below if I gave the function "createArray(10507)" I would like it to build an array of all the childNode id's.

myArray = array(10511, 10512, 10513, 10514, 10515)

From an xml file like this sample:

<site id="10500" level="0" parent="" label="Home" href="javascript:nodelink(10500)">
      <section id="10501" level="1" label="Flights" href="javascript:nodelink(10501)"></section>
      <section id="10502" level="1" label="Hotels" href="javascript:nodelink(10502)"></section>
      <section id="10503" level="1" label="Cars" href="javascript:nodelink(10503)"></section>
      <section id="10504" level="1" label="Crusies" href="javascript:nodelink(10504)"></section>
      <section id="10505" level="1" label="Vacations" href="javascript:nodelink(10505)"></section>
      <section id="10506" level="1" label="Specials" href="javascript:nodelink(10506)"></section>
      <section id="10507" level="1" label="About Us" href="javascript:nodelink(10507)">
            <section id="10511" level="2" label="Employment" href="javascript:nodelink(10511)"></section>
            <section id="10512" level="2" label="News &amp; Events" href="javascript:nodelink(10512)"></section>
            <section id="10513" level="2" label="Testimonials" href="javascript:nodelink(10513)"></section>
            <section id="10514" level="2" label="Specialties" href="javascript:nodelink(10514)"></section>
            <section id="10515" level="2" label="Our Locations" href="javascript:nodelink(10515)"></section>
      </section>
      <section id="10508" level="1" label="Postcards Magazine" href="javascript:nodelink(10508)"></section>
      <section id="10509" level="1" label="Contact Us" href="javascript:nodelink(10509)"></section>
      <section id="10510" level="1" label="Privacy Policy" href="javascript:nodelink(10510)"></section>
      <section id="10517" level="1" label="Travel Services" href="javascript:nodelink(10517)"></section>
</site>

Thank you for your help. I'm stuck.

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Asked On
2006-02-26 at 20:09:22ID21752567
Tags

loop

,

xml

,

javascript

,

through

,

childnodes

Topic

Extensible Markup Language (XML)

Participating Experts
1
Points
500
Comments
6

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Answers

 

by: GertonePosted on 2006-02-27 at 00:07:24ID: 16053457

Hi greddin,

this can be done with a single XPath expression

//section[id='10507']/section/@id
for direct children

or
//section[id='10507']//section/@id
for decendants

you can construct this XPath as a string, passing in the id parameter
than you can pass this string in selectNodes() as a parameter
selectNodes will return the array you want

Cheers!

 

by: GertonePosted on 2006-02-27 at 00:14:37ID: 16053487

greddin,

here is an example on using selectNodes() in VBScript

http://www.devguru.com/Technologies/xmldom/quickref/node_selectNodes.html

it would be better to install msxml4 (download from microsoft website)
and use this object instead "Msxml2.DOMDocument.4.0"

here is some starter info on XPath
http://www.w3schools.com/xpath/default.asp

cheers

 

by: greddinPosted on 2006-02-27 at 18:03:36ID: 16061088

Ok, I've tried this but I'm missing something. It's not working yet. Just doesn't get anything.  Here's my code:

Dim objXML
Dim objNode
Set objXML = Server.CreateObject("Microsoft.XMLDOM")
objXML.async = false
objXML.load(server.MapPath("sitenavigation.xml"))

If objXML.parseError.errorCode <> 0 Then
Response.Write "There was an error loading the xml file!<br>"
Else
Response.Write "XML loaded.<br>"
End If

Set objNode = objXML.selectNodes("//section[id=10507]/section/@id")

For Each Node In objNode
Response.Write Node.getAttribute("id") & "<br>"
Next

Set objXML = Nothing
Set objNode = Nothing

Thanks for you help.

 

by: GertonePosted on 2006-02-28 at 00:21:54ID: 16062963

Set objNode = objXML.selectNodes("//section[id=10507]/section/@id")

should be

Set objNode = objXML.selectNodes("//section[@id='10507']/section/@id")

note that you require a "@" for attribute
and single quotes for the value
(the single quotes are not required, it is treated as an integer without quotes
and then an id 010507 would match as well)

try again at least with the "@"

cheers

 

by: greddinPosted on 2006-02-28 at 05:43:26ID: 16065014

I'm getting an error message now:

Error Type:
Microsoft VBScript runtime (0x800A01B6)
Object doesn't support this property or method: 'getAttribute'

Any ideas?


 

by: GertonePosted on 2006-02-28 at 06:00:48ID: 16065168

you already catch the attribute values
so you don't need getAttributes
try this

For Each Node In objNode
Response.Write Node.text  & "<br>"
Next

20120131-EE-VQP-002

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