Access XML data via javascript - Stack Overflow

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How can I get the value of my xml data using a javascript. Im accessing my xml file on my domain, and view it on the client side.

my.xml

<usr>
  <uid trk="1234">
    <getThis>kdzbnya</getThis>
  </uid>
</usr>

I want to get the value of "getThis"

sample.js

function alertThis(){
        var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
        var xmlFile = "my.xml";
        xmlDoc.async="false";
        xmlDoc.load(xmlFile);
        xmlObj=xmlDoc.documentElement;
        try {
            var v = "";
            $.each(xmlObj.childNodes, function(i, valThis) { 
                if(valThis.getAttribute("trk") == "1234"){
                    v += valThis.getElementsByTagName('getThis').nodeValue;
                }   
            });
             alert(v);
        }
        catch(e){
            alert(e);
        }
}

but it returns undefined value.

How can I get the value of my xml data using a javascript. Im accessing my xml file on my domain, and view it on the client side.

my.xml

<usr>
  <uid trk="1234">
    <getThis>kdzbnya</getThis>
  </uid>
</usr>

I want to get the value of "getThis"

sample.js

function alertThis(){
        var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
        var xmlFile = "my.xml";
        xmlDoc.async="false";
        xmlDoc.load(xmlFile);
        xmlObj=xmlDoc.documentElement;
        try {
            var v = "";
            $.each(xmlObj.childNodes, function(i, valThis) { 
                if(valThis.getAttribute("trk") == "1234"){
                    v += valThis.getElementsByTagName('getThis').nodeValue;
                }   
            });
             alert(v);
        }
        catch(e){
            alert(e);
        }
}

but it returns undefined value.

• javascript
• xml
• nodes
• getelementsbytagname

Share Improve this question Follow asked Jan 13, 2012 at 0:30 Robin Carlo CatacutanRobin Carlo Catacutan 13.7k1212 gold badges5454 silver badges8686 bronze badges 2

• you know this wont work in Firefox, right? – dbrin Commented Jan 13, 2012 at 0:35
• @DmitryB yes, the activexObject you mean, but I'm only working this on IE because it's for the windows 7 gadget. – Robin Carlo Catacutan Commented Jan 13, 2012 at 0:37

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3 Answers 3

Sorted by: Reset to default 2

Try adding a .item(0) or [0] between getElementsByTagName(...) and .nodeValue:

v += valThis.getElementsByTagName('getThis').item(0).nodeValue;

You'll need this as getElementsByTagName returns a NodeList (which can resemble an Array). The list won't have a nodeValue property itself, but the nodes within it should.

I see you're using jQuery.

change

v += valThis.getElementsByTagName('getThis').nodeValue

to

v += $(valThis).find('getThis').text()

See this example http://www.w3schools./xml/xml_parser.asp of an XML parser. But in reality you probably want to use a framework to load the XML and parse it. There is plenty of them out there, check microjs. for the features that you are looking for.

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