request.responseTxet为什么显示undefined

[HazzaCheng]

function getHTTPObject()
{
	if(typeof XMLHttpRequest=="undefined")
	{
		XMLHttpRequest=function()
		{
			try{return new ActiveXObject("Msxml2.XMLHTTP.6.0"); }
				catch (e){}
			try{return new ActiveXObject("Msxml2.XMLHTTP.3.0"); }
				catch (e){}
			try{return new ActiveXObject("Msxml2.XMLHTTP"); }
				catch (e){}
			return false;
		}		
	}
	return new XMLHttpRequest();
}
addLoadEvent(getHTTPObject);

function getNewContent()
{
	var request=getHTTPObject();
	if(request)
	{
		request.open("GET","example.txt",true);
		request.onreadystatechange=function()
		{
			if(request.readyState==4)
			{
				alert("Response Received");
				var para=document.createElement("p");
				var txt=document.createTextNode(request.responseTxet);
				para.appendChild(txt);
				document.getElementById('new').appendChild(para);
			}
		};
		request.send(null);
	}
	else
	{
		alert('sorry,your browser dosen\'t support XMLHttpRequest');
	}
	alert('Function done');
}
addLoadEvent(getNewContent);

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="utf-8" />
	<title>Ajax</title>
</head>
<body>

	<div id="new"></div>
	
	<script src="scripts/addLoadEvent.js"></script>
	<script src="scripts/getHTTPObject.js"></script>
	<script src="scripts/getNewContent.js"></script>
</body>
</html>

最后显示到网页上的是undefined,而不是文档中的内容

[斯洛文尼亚旅游]

request.responseTxet ==> request.responseText

[HazzaCheng]

但改成request.responseText后 连undefined也不出现了 是怎么回事？@无聊码农