document.writeln not working with SetTimeout

**gyoav** · 05-09-2012 03:40 AM

Hello,
I'm (very) new to wed developping.
I need to write a small html page that reads an XML, and displays properties from the last tag.
The page should refresh every 3 seconds.
I've written this code and it's working fine expect from the refresh part.
I tried replacing "document.writeln" with "alert" and it's working fine.

Please help (my knowledge is quite limited, so please use simple words

)

The code:
<html>
<head>
<title>EDX Status</title>
//<META HTTP-EQUIV="refresh" CONTENT="5">
<script type="text/javascript">
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
function readXML()
{
var xmlFile = "somefile.xml";
xmlDoc.async="false";
xmlDoc.load(xmlFile);
xmlObj=xmlDoc.documentElement;
var lastTag = xmlDoc.getElementsByTagName('SomeTag');
document.writeln(lastTag[lastTag.length-1].getAttribute("AttributeOne")+" "+lastTag[lastTag.length-1].getAttribute("AttributeTwo"));
}
function callRead() {
var t=setTimeout("readXML()",3000);
}

</script>
</head>

<body onload="callRead();"">

</body>
</html>

**Padonak** · 05-09-2012 03:48 AM

try this

Code:

...
// instead of that writeln
document.getElementById('result').innerHTML=lastTag[lastTag.length-1].getAttribute("AttributeOne")+" "+lastTag[lastTag.length-1].getAttribute("AttributeTwo");
...

HTML Code:

<body onload="callRead();""> 
<div id="result"></div>
 </body>

**gyoav** · 05-09-2012 06:23 AM

it's woking great, thanks so much!

**Padonak** · 05-09-2012 07:21 AM

the problem was that you were trying to call document.write after the page is loaded. for the very first sight it seems that document.write goes in the head section but it is called by timeout when the page is already loaded

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