显示用户是否在线的方法

check.asp

<script language=javascript>

function Test()

{

var xmlhttp = new ActiveXObject("MSXML2.XMLHTTP");

xmlhttp.open("POST","online.asp",false); // 向onceonline.asp发送更新请求

xmlhttp.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded");

xmlhttp.send();

}

setInterval("Test();",10); // 10秒钟发送一次更新请求

</script>

online.asp

<!--#include file="conn.asp"-->

<%

conn.Execute "update hand_us set i='"&ii&"' where h=true and a='"&request.cookies("login_hand")&"'" '更新最后在线时间

conn.Execute "update hand_us set h=false where datediff('s',i,now())>1" '删除不在线的用户

enddata()

%>