Load xml from javascript

Question

Totally new to XML and I've been struggling on this very simple objective for too long (though I can find enough on the internet about it). Just need the values out of this xml file:

<?xml version="1.0" encoding="UTF-8"?>
<materials>
    <basic>
        <uurloon>10</uurloon>
        <setloon>100</setloon>
    </basic>
    <extra>
        <geluid>150</geluid>
        <ledset>35</ledset>
        <strobo>20</strobo>
        <laser>50</laser>
    </extra>
</materials>

In javascript, I use this code to get the xml data:

// load xml file
if (window.XMLHttpRequest) {
   xhttp = new XMLHttpRequest();
} else {    // IE 5/6
   xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xhttp.open("GET", "pricing.xml", false);
xhttp.send();
xmlDoc = xhttp.responseXML; 

var uurloon = xmlDoc.getElementsByTagName("uurloon")[0].childNodes[0].text;
var setloon = xmlDoc.getElementsByTagName("setloon")[0].childNodes[0].text
alert('end');

No result though, cause I'm not seeing the alert..

Richard JP Le Guen · Accepted Answer · 2011-11-23 21:46:41Z

Your server isn't returning the appropriate Content-Type header. The responseXML property only works if the server returns a Content-Type: text/xml or similar +xml header.

See Ajax Patterns:

The service just needs to output an XML Content-type header...

From the w3c:

If final MIME type is not null, text/xml, application/xml, and does not end in +xml [...] return null.

If you have no access to the server and can't change the Content-Type header, use the overrideMimeType function to force the XMLHttpRequest to treat the response as text/xml:

if (window.XMLHttpRequest) {
   xhttp = new XMLHttpRequest();
} else {    // IE 5/6
   xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xhttp.overrideMimeType('text/xml');

xhttp.open("GET", "pricing.xml", false);
xhttp.send(null);
xmlDoc = xhttp.responseXML;

var uurloon = xmlDoc.getElementsByTagName("uurloon")[0].childNodes[0].text;
var setloon = xmlDoc.getElementsByTagName("setloon")[0].childNodes[0].text
alert('end');

citation: http://blog-rat.blogspot.com/2010/11/xmlhttprequestresponsexml-returns-null.html

DrStrangeLove · Accepted Answer · 2011-11-23 21:25:29Z

2

// load xml file
if (window.XMLHttpRequest) {
   xhttp = new XMLHttpRequest();
} else {    // IE 5/6
   xhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xhttp.open("GET", "pricing.xml", false);
xhttp.send(null);
xhttp.onreadystatechange = function(){
 if (xhttp.status == "200")
xmlDoc = xhttp.responseXML; 
}
var uurloon = xmlDoc.getElementsByTagName("uurloon")[0].childNodes[0].textContent;
var setloon = xmlDoc.getElementsByTagName("setloon")[0].childNodes[0].textContent;
alert('end');

answered Nov 23, 2011 at 21:25

DrStrangeLove

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Comments

Galled · Accepted Answer · 2011-11-23 21:30:33Z

I make a simple test with a file called price.xml:

<?xml version="1.0" encoding="UTF-8"?>
<materials>
    <basic>
        <uurloon>10</uurloon>
        <setloon>100</setloon>
    </basic>
    <extra>
        <geluid>150</geluid>
        <ledset>35</ledset>
        <strobo>20</strobo>
        <laser>50</laser>
    </extra>
</materials>

And html with this code:

<!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" dir="ltr" lang="es">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head> 
<body onload="init()">
<p>Hola</p>
<script>
function init(){
    // load xml file
    if (window.XMLHttpRequest) {
       xhttp = new XMLHttpRequest();
    } else {    // IE 5/6
       xhttp = new ActiveXObject("Microsoft.XMLHTTP");
    }

    xhttp.open("GET", "price.xml", false);
    xhttp.send();
    xmlDoc = xhttp.responseXML; 

    var uurloon = xmlDoc.getElementsByTagName("uurloon")[0].childNodes[0].textContent;
    var setloon = xmlDoc.getElementsByTagName("setloon")[0].childNodes[0].textContent;
    console.log(uurloon,setloon); //give me "10 100"
}
</script>
</body>
</html>

And in works for me. I think fails for you because you are calling the .text atribute instead .textContent.

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