Why won'y my AJAX post method work?

Why won't my AJAX post method work? It gives me an javascript error "not implemented"

This is what I coded...

Javascript Code:

//get xmlhttp
xmlhttp = null;
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp = new XMLHttpRequest();
}
else
{
// code for IE6, IE5
  xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

//printtest
function printtest()
{
	if (xmlhttp.readyState == 4)
	{
		document.getElementById('text').innerHTML = xmlhttp.responseText;
	}
}

//submit
function submit()
{
	var inputtext = 'inputtext=' + document.getElementById('inputbox').value;
	var params = inputtext;
	
	xmlhttp.open('POST','testfunction.php',true);
	
	xmlhttp.onreadystatechange = printtest();


	xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlhttp.setRequestHeader("Content-length", params.length);
	xmlhttp.setRequestHeader("Connection", "close");
	
	xmlhttp.send(params);
}

Code (markup):

//PHP code:

<?PHP
	$var = $_POST['inputtext'];
	echo $var;
?>

Code (markup):

Thanks for any help.

~imozeb

 

Not sure. Seems ok. Use this code, test it and check it works. Then make any adjustment you need for your script.

var http = getXmlHttpObject(); 
function handleHttpResponse(){ 
    if (http.readyState == 4){ 
        results = http.responseText; 
        document.getElementById('text').innerHTML = results;
    }
} 

//submit
function submit()
{  
	
    host = "www.somehost.com";
	url = "http://" + host + "/script.php";
	http.open("GET", url, true); 
	http.onreadystatechange = handleHttpResponse; 
	http.send(null);
}

function getXmlHttpObject(){ 
    var xmlhttp; 

    /*@cc_on 
    @if (@_jscript_version >= 5) 
    try{ 
    xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); 
    } 
    catch (e){ 
    try{ 
    xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); 
    } 
    catch (e){ 
    xmlhttp = false; 
    } 
    } 
    @else 
    xmlhttp = false; 
    @end @*/ 

    if (!xmlhttp && typeof XMLHttpRequest != 'undefined'){ 
        try{ 
            xmlhttp = new XMLHttpRequest(); 
        } 
        catch (e){ 
            xmlhttp = false; 
        } 
    } 
    return xmlhttp; 
} 

Code (markup):

 

Your code is using the 'get' method. I can use the 'get' method just fine, but when I try to use the post method everything goes wrong. Can someone help me with the 'post' method?