查看当前用户在网页上停留的时间
<script language="javascript">
<!--
var ap_name= navigator.appName;
var ap_vinfo= navigator.appVersion;
var ap_ver = parseFloat(ap_vinfo.substring(0,ap_vinfo.indexOf('(')));
var time_start = new Date();
var clock_start = time_start.getTime();
var dl_ok = false;
function init()
{
if(ap_name=="Netscape" && ap_ver>=3.0)
dl_ok=true;
return true;
}
function get_time_spent()
{
var time_now = new Date();
return ((time_now.getTime() - clock_start)/1000);
}
function show_secs()
{
var i_total_secs = Math.round(get_time_spent());
var i_secs_spent = i_total_secs % 60;
var i_mins_spent = Math.round((i_total_secs-30)/60);
var s_secs_spent = "" + ((i_secs_spent>9)? i_secs_spent : "0" + i_secs_spent);
var s_mins_spent = "" + ((i_mins_spent>9)? i_mins_spent : "0" + i_mins_spent);
document.fmO.time_spent.value = s_mins_spent + ":" + s_secs_spent;
window.setTimeout('show_secs()',1000);
}
</script>
<body onLoad="init();window.setTimeout('show_secs()',1);">
<form name="fmO" onSubmit="0"><font color="#6060FF">停留时间：</font><input type="text" name="time_spent" size=7 onFocus="this.blur()">
<input type="submit" value="提交"></form>