我用Ajax技术实现页面刷新图片怎么没效果呢？

Question

Response.Write(@"imgs\"+k+".jpg");
这样也行？字符串和整数相加
Response.Write(@"imgs/"+k.ToString()+".jpg");

Answer 1

if(xmlhttp.readystate==4 && xmlhttp.readystate=='complete')
这句应该是
if(xmlhttp.readyState==4 && xmlhttp.status==200)

Answer 2

試下調用這個類
function AJAXRequest() {
var xmlObj = false;
var CBfunc,ObjSelf;
ObjSelf=this;
try { xmlObj=new XMLHttpRequest; }
catch(e) {
try { xmlObj=new ActiveXObject("MSXML2.XMLHTTP"); }
catch(e2) {
try { xmlObj=new ActiveXObject("Microsoft.XMLHTTP"); }
catch(e3) { xmlObj=false; }
}
}
if (!xmlObj) return false;
this.method="get";
this.url;
this.async=true;
this.content="";
this.callback=function(cbobj) {return;}
this.send=function() {
if(!this.method||!this.url||!this.async) return false;
this.url=this.url.replace(/\,/g,'\\');
xmlObj.open (this.method, this.url, this.async);
if(this.method=="POST") xmlObj.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xmlObj.onreadystatechange=function() {
if(xmlObj.readyState==4) {
if(xmlObj.status==200) {
ObjSelf.callback(xmlObj);
}
}
}
if(this.method=="POST") xmlObj.send(this.content);
else xmlObj.send(null);
}
}