为什么是undefined

[fujun3]

代码如下：var request=false;

function createRequest(){
try{
request=new XMLHttpRequest();
}catch(trymicrosoft){
try{
request = new ActiveXObject("Msxml2.XMLHTTP");
}catch(othermicrosoft){
try{
request=new ActiveXObject("Microsoft.XMLHTTP");
}catch(failed){
request=null
}
}
}
return request;
}

//刷新安全码
function fRefreshRandomNoClick(){
request=createRequest();
if(request==null){
alert("Unable to create request");
return;
}


var url="checkcode_zn.jsp";
request.open("GET", url, true);
alert("1");
alert(request.states);
request.onreadystatechange=function(){
if(request.readyState == 4){
if(request.statues == 200){
alert("4");
}
}
}
alert("2");
request.send(null);
alert("3");
}
结果内容为4的对话框没有弹出来，而（alert（request.states)弹出的对话框为undefined
为什么？？？？？

[chwoyaofei]

alert（request.states)
改为
alert（request.statues)

[fujun3]

alert（request.statues）还是显示undefined

[fujun3]

问题解决，应该是status

[friendly_]

楼上的也不对应该是
alert（request.status)

[chwoyaofei]

不好意思应该是status

[swandragon]

[monkeyking1987]

我建议最初的
var request；面不应该是var request=false;

[bayougeng]

alert（request.status)

[YangWenChaoX]

request.open("GET", url, true);
==》
request.open("GET", url, null);