JavaScript calculates the user's stay for opening the webpage

复制代码代码如下:

<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 () // show the time user spent on the side

{

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.fm0.time_spent.value = s_mins_spent + ":" + s_secs_spent;

window.setTimeout('show_secs()',1000);

}

// -->

</SCRIPT>