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POJavascript - XMLHttpRequest, result are always undefined
 

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    <p>I'm trying to test if the xml file have the tag "<code>&lt;group&gt;</code>"</p> <pre><code>var xmlhttp = new window.XMLHttpRequest(); xmlhttp.open("GET", "xmlfile.xml", false); xmlhttp.send(null); xml = xmlhttp.responseXML.documentElement; var thegroup = xml.getElementsByTagName('group')[0]; if (!group) { alert('No &lt;group&gt; in the XML: ' + xml); return; } else { alert(xml + 'have a &lt;group&gt; tag'); } </code></pre> <p>Even if my xml file have the tag "<code>&lt;group&gt;</code>" the result is always negative, and the variable "<code>thegroup</code>" is undefined.</p> <p>"<code>xml</code>" give me "[object Element]"</p> <p>Where is my mistake?</p> <p>PS: I'm only interested in webkit, I don't care about IE, Opera or Firefox for now.</p> <p>EDIT : HERE IS MY ACTUAL CODE</p> <pre><code>&lt;!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"&gt; &lt;html&gt; &lt;head&gt; &lt;meta http-equiv="CONTENT-TYPE" content="text/html; charset=UTF-8"&gt; &lt;title&gt;xmltest&lt;/title&gt; &lt;script type="text/javascript"&gt; function init() { var xmlhttp = new window.XMLHttpRequest(); xmlhttp.open("GET", "xmlfile.xml"); xmlhttp.send(null); xmlhttp.onreadystatechange = callbackFunction; function callbackFunction(){ if (xmlhttp.readyState == 4){ xml = xmlhttp.responseXML.documentElement; var group = xml.getElementsByTagName('group')[0]; console.debug(xml) if (!group) { alert('No &lt;group&gt; in the XML: ' + xml); return; } else { alert(xml + 'have a &lt;group&gt; tag'); } } } }; &lt;/script&gt; &lt;/head&gt; &lt;body onLoad="init();"&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>and my xmlfile.xml :</p> <pre><code>&lt;?xml version="1.0" ?&gt; &lt;group type="vertical"&gt; &lt;name&gt;name&lt;/name&gt; &lt;title&gt;title&lt;/title&gt; &lt;/group&gt; </code></pre> <p>At this point the alert is triggered saying : No <code>&lt;group&gt;</code> in the XML: [object Element]</p> <p>So maybe my problem is just on the way I try to find the <code>&lt;group&gt;</code> tag ?</p>
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