onreadystatechange disfunction

A-man · 08-01-2012, 07:42 PM

Hello,
I have a problem with a command in javascript, during an AJaX call.
I use the following code to detect when the readyState of a variable has changed so that I call another function.

Code:

myrequest.onreadystatechange=getData();

function getData() {

if (myrequest.readyState===4) {
if  (myrequest.status===200) {
var text=myrequest.responseText;
alert(text);

}

}

}

The problem is that the command onreadystatechange does not work properly because the function getData() gets loaded before the readyState of myrequest has changed. What can I do to fix this?

DaveyErwin · 08-01-2012, 08:01 PM

Code:

<!DOCTYPE html>
<html>
<head>
<title>Test</title>
</head>
<body>
Procedure started
<script type="text/javascript">
var myrequest=new XMLHttpRequest;
myrequest.open("GET",'test.txt',true);
myrequest.onreadystatechange=getData;
function getData() {
	if (myrequest.readyState===4) {
		if (myrequest.status===200) {
			var text=myrequest.responseText;
			alert(text);
		}
	}
}
myrequest.send(null);

</script>
</body>
</html>

A-man · 08-02-2012, 09:42 AM

Thank you very much DaveyErwin,
It worked thank you again.