JavaScript calcula a permanência do usuário para abrir a página da web

复制代码代码如下:

<Script Language = "JavaScript">

<!-

var ap_name = navegator.appname;

var ap_vinfo = navegador.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;

função init ()

{

if (ap_name == "netscape" && ap_ver> = 3.0)

dl_ok = true;

retornar true;

}

função get_time_spent ()

{

var time_now = new Date ();

return ((time_now.gettime () - clock_start)/1000);

}

function show_secs () // mostra o tempo gasto no lado

{

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>