日期:2014-05-17 浏览次数:20645 次
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<div id="test"></div>
<script type="text/javascript">
function test(){
var aj;
try{aj=new ActiveXObject("Msxml2.XMLHTTP");}
catch(e){
try{aj=new ActiveXObject("Microsoft.XMLHTTP");}
catch(E){aj=false;}
}
var time = Math.round(new Date().getTime() / 1000);
if(!aj&&typeof XMLHttpRequest!=undefined)aj=new XMLHttpRequest();
aj.open("GET","b.php?time="+time,true);
aj.setRequestHeader('Content-Type','application/x-www-form-urlencoded;charset=utf-8');
aj.onreadystatechange=function(){
if(aj.readyState==4&&aj.status==200){
document.getElementById("test").innerHTML += aj.responseText;
test(); // 收到结果后重新建立连接
}
}
aj.send(null);
}
test();
</script>
</body>
</html>