[magicadmin]

Hi all,

I want to send some info from a form to a php page without reloading the page,
I have tried some AJAX but its not 100% right, it works some of the time but some times its crashing out my server, it make my CPU run at 100% so i think there is a big bug in it.

Code:

var xmlHttp

function clearwall()
{
var url="./includes/graffiti.php?painttext=&adminreset=1&userwallwiped=1"
xmlHttp=GetXmlHttpObject(wallstateChanged)
xmlHttp.open("POST", url , true)
xmlHttp.send(null)
} 

function wallstateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
wipegraffitiwall()
} 
} 

function GetXmlHttpObject(handler)
{ 
var objXmlHttp=null

if (navigator.userAgent.indexOf("MSIE")>=0)
{ 
var strName="Msxml2.XMLHTTP"
if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
{
strName="Microsoft.XMLHTTP"
} 
try
{ 
objXmlHttp=new ActiveXObject(strName)
objXmlHttp.onreadystatechange=handler 
return objXmlHttp
} 
catch(e)
{ 
alert("Error. Scripting for ActiveX might be disabled") 
return 
} 
} 
if (navigator.userAgent.indexOf("Mozilla")>=0)
{
objXmlHttp=new XMLHttpRequest()
objXmlHttp.onload=handler
objXmlHttp.onerror=handler 
return objXmlHttp
}
}

Dose any one know how to do this or whats up with my ajax??

Thanks all

[TwoD]

First, I don't see anything wrong with the code. I think the servercode might have a bug (or maybe a connection problem which stops the server from receiving the whole message). Have you tried printing out what the server gets each time the script calls it?

Second, don't detect the browser used, detect which objects are available. (Some browsers can be set to appear as others, even if they don't support the same things.)

One good way to do this is to try to create the ActiveX objects in the order you'd like them to be prioritized.
Here's one way to do it.

Code:

function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null

	if(window.ActiveXObject){

		try{
			objXmlHttp=new ActiveXObject("Msxml2.XMLHTTP")
		}
		catch(er){
			try{
				objXmlHttp=new ActiveXObject("Microsoft.XMLHTTP")
			}
			catch(er2){
				alert("Error. Scripting for ActiveX might be disabled") 
			}			
		}
		if(objXmlHttp){
			objXmlHttp.onreadystatechange=handler 
		}
	}
	else{ 
		try{
			objXmlHttp=new XMLHttpRequest()
			objXmlHttp.onload=handler
			objXmlHttp.onerror=handler 
		}
		catch(er3){
			alert("Error. Failed to init XMLHttpRequest")
		}
	}
	return objXmlHttp
}

[magicadmin]

Thanks once again TwoD for your help.

The problem i have is very confusing as its not all the time... the script works most of the time but evey so often it just messes up big time... i think you could be right it maybe the php side of things but i never have any errors in the log...

[magicadmin]

the problem was php but as of why it was not happening all the time i have not worked out yet...