XMLHTTP

最新推荐文章于 2022-12-30 19:32:57 发布

转载最新推荐文章于 2022-12-30 19:32:57 发布 · 404 阅读

文章标签：

#xmlhttprequest #function #mozilla #safari #object #null

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var strinfo
function getAjax()
{
var XmlHttp;

//Creating object of XMLHTTP in IE
try
{
XmlHttp = new ActiveXObject("Msxml4.XMLHTTP");
}
catch(e)
{
   try
    {
     XmlHttp = new ActiveXObject("Msxml3.XMLHTTP");
    }
   catch(e)
    {
     try
      {
       XmlHttp = new

ActiveXObject("Msxml2.XMLHTTP");
      }
     catch(e)
      {
       try
        {
         XmlHttp = new

ActiveXObject("Microsoft.XMLHTTP");
        }
       catch(oc)
        {
         XmlHttp = null;
        }
      }
    }
}
//Creating object of XMLHTTP in Mozilla and Safari
if(!XmlHttp && typeof XMLHttpRequest != "undefined")
{
XmlHttp = new XMLHttpRequest();
if(XmlHttp.overrideMimeType)
{
       XmlHttp.overrideMimeType("text/xml");
      }
}
return XmlHttp;
}
function refreshh()
{
//5秒自?刷新一次,1秒取得一次数据.

timer = window.setInterval("loadData()",5000);

}
<!--
function loadData(){

url = "message_new.aspx";
req = getAjax();

req.onreadystatechange = function(){

if( req.readyState == 4 && req.status == 200 ) {
strinfo = req.responseText;
shownewmessage();
}

}

req.open( 'GET', url, true );
req.send( null );

}
function shownewmessage(){
document.all["labelnumber"].innerText ="?有 "+strinfo+" 条新消息";

}