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hangs on xmlhttp.responseXML.documentElement.getElementsByTagName("")

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Oct 25.2009

PLEASE help!!! This is driving me crazy …..

When I use the code:
var x=xmlhttp.responseXML.documentElement.getElementsByTagName(“ITM”);

the page hangs with no errors, but if I put an alert in front of the line:
alert(“”);
var x=xmlhttp.responseXML.documentElement.getElementsByTagName(“ITM”);

after clearing the alert the code runs perfectly.

Something to do with focus maybe??? I am so confuzed.

Thanks for any help with this,

Travis

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JavaScript

3 Comments(s) ↴

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@Declan1991Oct 25.2009 — You are using xmlhttp before it is created. The alert works because by the time you have clicked on the alert, xmlhttp.responseXML has loaded. You need [url=http://www.tizag.com/ajaxTutorial/ajaxxmlhttprequest.php]onreadystatechange[/url].
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@tschwarzauthorOct 25.2009 — I should have put the load info as well I am using onStateChange before the function is called.

[CODE]<script type="text/javascript">

var xmlhttp;

function loadXMLDoc(url)
{

xmlhttp=null;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE5, IE6
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=onResponse;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);

creatediv();
}

function onResponse()
{
// alert("rs"+xmlhttp.readyState);
// alert("st"+xmlhttp.status);
if(xmlhttp.readyState!=4) return;

if(xmlhttp.status!=200)
{
alert("Problem retrieving XML data");
return;
}

}

function creatediv() {
alert("");
var a=0;
var x=xmlhttp.responseXML.documentElement.getElementsByTagName("ITM");
var wrapper = document.createElement('div');
wrapper.setAttribute('id', "wrapper");
document.body.appendChild(wrapper);[/CODE]
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@tschwarzauthorOct 25.2009 — Also, I just found out the code hangs without the alert in chrome.

Travis
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