| 发表于：2007-06-08 10:41:59 楼主 |
以下这段代码readystate总返回3，怎么会事啊，请指教啊！！：）
var msxml = new array（ "msxml2 ", "msxml3 ", "microsoft ");
var req;
function yyajax（uri,method,asy,value)
{
this.uri = encodeuricomponent （uri);
this.method = method;
this.asy = asy;
this.value=value;
//alert （uri+method+asy+value);
this.serverconnect = function（)
{
if（window.activexobject)
{
var ieversion =parsefloat（navigator.appversion);
try{
if（ieversion <5)
{
for（var i=0;i <msxml.length;i++){
try{
req = new activexobject（ "microsoft.xmlhttp ");
//req = new activexobject（msxml[i]+ ".xmlhttp ");
alert （msxml[i]+ ".xmlhttp ");
}catch（e){}
}
req = new activexobject（ "microsoft.xmlhttp ");
}else
throw（ "error! ");
}catch（error)
{
alert（error);
return false;
}
}else if（window.xmlhttprequest)
{
try{
req = new xmlhttprequest（);
if（req.overridemimetype)
req.overridemimetype（ "text/xml ");
}catch（e){return false;}
}
if（!req)
return false;
req.onreadystatechange = this.processrequest;
this.send（);
}
this.send = function（){
parameters = this.value;
if（this.method.tolowercase（)== "post ")
{
req.open（this.method,this.uri,this.asy);
req.setrequestheader（ "method ", "post ");
req.setrequestheader（ "http-version ", "http/1.1 ");
req.setrequestheader（ 'content-type ', 'application/x-www-form-urlencoded;charset=gb2312 ');
req.send（parameters);
}
else{
req.open（this.method,this.uri,this.asy);
req.send（a);
}
}
this.processrequest = function（){
if（req.readystate==4)
{
if（req.status==200)
{
var str = req.responsetext;
if（str!= " ")
document.getelementbyid（ "board ").innerhtml = str;
document.getelementbyid（ "board ").scrolltop=document.getelementbyid（ "board ").scrollheight;
}
}else{
switch（req.readystate)
{
case 0:
document.getelementbyid（ "rel ").innerhtml= "对象已经建立，但未初始化 ";
break;
case 1:
document.getelementbyid（ "rel ").innerhtml= "对象已经建立，但尚未调用send（） ";
break;
case 2:
document.getelementbyid（ "rel ").innerhtml= "send（)方法已经调用，但当前状态及http头未知 ";
break;
case 3:
document.getelementbyid（ "rel ").innerhtml= "已接受部分数据，因为响应及http头不全，这时通过responsebody和responsetext获取部分数据会出现错误 ";
break;
default:break;
}
}
}
}
|
|
|
|
|
