[thelist] Ajax error? Not a function?
Chris Ditty
cditty at gmail.com
Mon Oct 9 16:57:43 CDT 2006
Didn't look like this sent the first time. If it is a duplicate, please
delete.
Can someone please tell me what I am doing wrong here? I picked up the Sams
book "Ajax in 10 minutes" and I am having some problems with the code. I am
getting an error on the myRequest.open line. It says that myRequest.open is
not a function.
<script language="javascript">
function getXMLHTTPRequest(){
var request = false;
if(window.XMLHTTPRequest){
request = new getXMLHTTPRequest(); /* Firefox and other good
browsers */
}else{
if(window.ActiveXObject){
try{
request = new ActiveXObject("Msm12.XMLHTTP"); /* some
versions of IE */
}
catch(err1){
try{
request = new ActiveXObject("Microsoft.XMLHTTP"); /*
other versions of IE */
}
catch(err2){
request = false;
}
}
}
}
return request;
}
var myRequest = getXMLHTTPRequest();
function callAjax(){
// declare a variable to hold some information to parse to the server.
var lastname = 'Smith';
// build the URL of the server script we wish to call
var url = "myserverscript.php?surname=" + lastname;
// generate a random number
var myRandom = parseInt( Math.random()*999999999);
// ask our XMLHTTPRequest object to open a server connection
myRequest.open("GET", url + "&rand=" + myRandom, true);
// prepare a function responseAjax() to run when the response has
arrived
myRequest.onreadystatechange = responseAjax;
// and finally send the request
myRequest.send(null);
}
function responseAjax(){
// we are only interested in a readyState of 4, ie... loaded
if(myRequest.readyState == 4){
// if server HTTP response is "OK"
if(myRequest.status == 200){
alert("Yippie. It worked");
}else{
// issue an error message for any other HTTP response
alert("An error has ocurred: " + myRequest.statusTest);
}
}
}
</script>
</head>
<body>
<form name="form1">
Name: <input type="text" name="myname" onblur="callAjax()" /><br />
Tel: <input type="text" name="telco" /><br />
<input type="submit" />
</form>
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