Kneeling for AJAX-related issues

Kneeling for Ajax problems

 
  


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The GetMessage () function above is to get Ajax to find out the data, getMessage () function inside the. onreadystatechange the specified callback function in Window.alert (MES); Print out always empty, But the GetMessage page of my AJAX request has returned Data Ah, here's the code for AJAX request GetMessage

 
   Include "MessageServer.class.php";

@header ("Cache-control:no-cache");
$getter = $_post[' getter '];
$sender = $_post[' sender '];

Call messageserive For information
$messageServer = new Messageserver ();

$messList = $messageServer->getmessage ($getter, $sender);

Echo $messList;

?>

Echo $messLis T is a data output, the output is
------to solve the idea----------------------
Receive
var mes=myxmlhttprequest.responsexml;
if (mes.xml = = ") {
alert (Myxmlhttprequest.responsetext);
Return
}
Window.alert (MES); It's always null to print out here.

------to solve the idea----------------------
is the data stream, you do not define the input content format, which can be either JSON or data
------to solve the idea----------------------
if (myxmlhttprequest.status==200) {
if (myxmlhttprequest.recvtype== "XML")
Echo Myxmlhttprequest.responsexml;
}

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