AJAX对象创建
//AJAX................................//多浏览器支持
var http_request = false;
function send_request(url,fun)
{ //初始化、指定处理函数、发送请求的函数
//alert("url\t"+url);
http_request = false;
//开始初始化XMLHttpRequest对象
if(window.XMLHttpRequest)
{ //Mozilla 浏览器
http_request = new XMLHttpRequest();
if(http_request.overrideMimeType)
{//设置MiME类别
http_request.overrideMimeType('text/xml');
}
}
else if(window.ActiveXObject)
{ // IE浏览器
try
{
http_request = new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e)
{
try
{
http_request = new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e){}
}
}
if(!http_request)
{ // 异常，创建对象实例失败
window.alert("不能创建XMLHttpRequest对象实例.");
return false;
}
http_request.onreadystatechange = fun;
// 确定发送请求的方式和URL以及是否同步执行下段代码
http_request.open("POST", url, true);
http_request.send(null);
}
页:
[1]