Javascript and xpath problem

[barbara1712]

Hello All,

I have xml file conating book details.Now I want to search some book details.
I want to serach using xpath in javascript.
I searched and I come accross the following vbscript code.
But I want to use xpath using javascript

<script type="text/vbscript">

set xmlDoc=CreateObject("Microsoft.XMLDOM")
xmlDoc.async="false"
xmlDoc.load("books.xml")

set nodes=xmlDoc.selectNodes("/bookstore/book")

for each x in nodes
document.write("<xmp>")
document.write(x.xml)
document.write("</xmp>")
next

</script>

Please help me how to use xpath in javascript.

[Raffles]

Give this a read: http://developer.mozilla.org/en/docs..._in_JavaScript

I found it very helpful.

[barbara1712]

Thanks for the link
From that link I tried and its running.But stuck at one point
The example I am trying is

if (window.XMLHttpRequest)
{
req=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
req=new ActiveXObject("Microsoft.XMLHTTP")
}
req.open("GET","book_detail.xml", false);
req.send(null);
var xmlDoc = req.responseXML;
var nsResolver = xmlDoc.createNSResolver( xmlDoc.ownerDocument == null ? xmlDoc.documentElement : xmlDoc.ownerDocument.documentElement);
var personIterator = xmlDoc.evaluate('//BOOK[PRICE=35]', xmlDoc, nsResolver, XPathResult.ANY_TYPE, null );
var thisNode = personIterator.iterateNext();
while (thisNode)
{
alert( thisNode.textContent );
thisNode = personIterator.iterateNext();
}

it gives me the result if search condition is an integer value i.e.

var personIterator = xmlDoc.evaluate('//BOOK[PRICE=35]', xmlDoc, nsResolver,

But fails to give the result if search condition is a string value i.e.

var personIterator = xmlDoc.evaluate('//BOOK[ID=P01]', xmlDoc, nsResolver,

Please help me!

[Raffles]

I don't have much experience with XPath, but I think it might be as simple as surrounding the value in quotation marks:

var personIterator = xmlDoc.evaluate('//BOOK[ID="P01"]', xmlDoc, nsResolver,

[barbara1712]

Thanks a lot.

It's working properly for mozilla and got the results for integer and string value as well.
But not working for IE.
And I have written my code for both.

Is there any problem with my code to run in IE?

[Raffles]

I've only used XPath for Greasemonkey scripts, so I've never needed to make it work in anything but Mozilla, but after a quick search it seems (unsurprisingly) that IE implements XPath in a different way. Looks like it should be fairly easy to use with object detection though.

I also had a look for Safari's support and it seems like it's not worth thinking much about - see this Safari blog post from August last year.

Opera 9 support it too and should work in exactly the same way as Mozilla's implementation.