相信用過(guò)google的analytics的朋友都了解其功能的強(qiáng)大.
    由于工作需要,最近將其urchin.js的代碼down了一份下來(lái)研究了一下.由于其注釋很少,命名也很難讀懂.研究了1個(gè)月.小有所成.將其代碼重寫并加上了注釋.與大家一同分享.這里面將google的用戶識(shí)別代碼刪除. /**//*
 =====================================
|--------Author By BlackSoul---------|
|------------2006.04.27--------------|
|--------BlackSoulylk@Gmail.com------|
|------------QQ:9136194--------------|
|------http://blacksoul.VEVb.cn---|
======================================
*/

//定義全局量
var ur = "";                                                  //來(lái)源地址
var urp = new Array();                                        //來(lái)源參數(shù)名稱
var urpv = new Array();                                       //來(lái)源參數(shù)值
var arrayCount = 0;                                           //參數(shù)數(shù)目
pageOpen = new Date();                                          //進(jìn)入頁(yè)面的時(shí)間
var reqURL = "var GUID = Math.round(Math.random()*2147483647);              //用戶唯一隨機(jī)數(shù)
var title = document.title;                                   //網(wǎng)頁(yè)標(biāo)題
var uexp = pageOpen.getTime() + ( 1000 * 60 * 60 * 24 * 30 ); //設(shè)置cookie過(guò)期時(shí)間 既回訪用戶的限定
var rtu = "false";                                            //指示用戶是否回訪用戶

//瀏覽器特征信息
var brower = new Array();
/**//*
* brower[0] 瀏覽器類型
* brower[1] 瀏覽器版本
* brower[2] 瀏覽器java是否打開 1開-1關(guān)
* brower[3] 瀏覽器Flash版本
* brower[4] 瀏覽器操作系統(tǒng)
* brower[5] 瀏覽器分辨率
* brower[6] 瀏覽器色深
* brower[7] 瀏覽器語(yǔ)言
* brower[8] 瀏覽器插件
*/
var sEn=new Array();    //搜索引擎的名稱
var keyWord=new Array(); //關(guān)鍵字傳輸形式
sEn[0]="google";        keyWord[0]="q";
sEn[1]="yahoo";            keyWord[1]="p";
sEn[2]="msn";            keyWord[2]="q";
sEn[3]="aol";            keyWord[3]="query";
sEn[4]="lycos";            keyWord[4]="query";
sEn[5]="ask";            keyWord[5]="q";
sEn[6]="altaVista";        keyWord[6]="q";
sEn[7]="search";        keyWord[7]="q";
sEn[8]="netscape";        keyWord[8]="query";
sEn[9]="earthlink";        keyWord[9]="q";
sEn[10]="cnn";            keyWord[10]="query";
sEn[11]="looksmart";    keyWord[11]="key";
sEn[12]="about";        keyWord[12]="terms";
sEn[13]="excite";        keyWord[13]="qkw";
sEn[14]="mamma";        keyWord[14]="query";
sEn[15]="alltheweb";    keyWord[15]="q";
sEn[16]="gigablast";    keyWord[16]="q";
sEn[17]="voila";        keyWord[17]="kw";
sEn[18]="virgilio";        keyWord[18]="qs";
sEn[19]="teoma";        keyWord[19]="q";
sEn[20]="baidu";        keyWord[20]="wd";
//test data----------------------------//////////////////////////////-----------/-/-/-/-/-/-/-/-/-/-/-
sEn[21]="localhost";    keyWord[21]="q";
    這里面定義一些全局的量,其中uPR,urpv為來(lái)源參數(shù)和指,比如來(lái)源為http://www.google.com/?p=BlackSoul&q=javascrJavascript".
但是最終傳輸?shù)臅r(shí)候是以分隔符的形式傳遞給服務(wù)器端的.
    GUID為隨機(jī)數(shù),google是這么做的.當(dāng)初沒有想通為什么要保存一個(gè)隨機(jī)數(shù),后來(lái)分析數(shù)據(jù)的才明白過(guò)來(lái).為了驗(yàn)證用戶的唯一性.
以下是函數(shù)處理:
//-----------------------------比較url,如果為搜索引擎則保存關(guān)鍵字-------------
function getKeyword(url)
{
    var hostname;
    if(url.indexOf(".") == -1)
        {hostname = url;}
    else
        {hostname = url.substring(url.indexOf("."),url.lastIndexOf("."));}
    for(var i = 0; i < sEn.length; i++)
    {
        if(hostname == sEn[i])
        {
            for(var j = 0; j < urp.length; j ++)
            {
                if(urp[j] == keyWord[i])
                {
                    return urpv[j];
                }
            }
        }
    }
   
    return "";
}
//將URL轉(zhuǎn)換為地址和頁(yè)面參數(shù)和參數(shù)值 參數(shù)uri為頁(yè)面地址
function gethn(uri)
{
    if(!uri || uri == "") return "";
    ur = uri;
    var sub;
    //帶參數(shù)
    if(ur.indexOf("?") != -1)
    {
        var url = ur.substring(0,ur.indexOf("?"));
        var para = ur.substring(ur.indexOf("?")+1,ur.length);
        while(para.length > 0)
        {
            if(para.indexOf("&") == -1)
            {
                urp[arrayCount] = para.substring(0,para.indexOf("="));
                urpv[arrayCount] = para.substring(para.indexOf("=")+1,para.length);
                break;
            }
            sub = para.substring(0,para.indexOf("&"));
            urp[arrayCount] = sub.substring(0,sub.indexOf("="));
            urpv[arrayCount] = sub.substring(sub.indexOf("=")+1,sub.length);
            para = para.substring(para.indexOf("&")+1,para.length);
            arrayCount ++;
        }
        return url;
    }
    else
        return ur;
}

//----------------------------獲得域名---------------------------------------------
function getHostName(url)
{
    url = url.substring(url.indexOf('://')+3,url.length);
    url = url.substring(0,url.indexOf("/"));
    return url;
}

//---------------------------獲得flash版本------------------------------------------
function getFlash() {
 var f="-1",n=navigator;
 if (n.plugins && n.plugins.length) {
  for (var ii=0;ii<n.plugins.length;ii++) {
   if (n.plugins[ii].name.indexOf('Shockwave Flash')!=-1) {
    f=n.plugins[ii].description.split('Shockwave Flash ')[1];
    break;
   }
  }
 } else if (window.ActiveXObject) {
  for (var ii=10;ii>=2;ii--) {
   try {
    var fl=eval("new ActiveXObject('ShockwaveFlash.ShockwaveFlash."+ii+"');");
    if (fl) { f=ii + '.0'; break; }
   }
   catch(e) {}
  }
 }
 if(f == "-1")
    return f;
 else
     return f.substring(0,f.indexOf(".")+2);
}

//--------------------------設(shè)置異步傳輸-----------------------------------
function createxmlHttpRequest()
{
    if (window.xmlhttpRequest)
    {
        return new XMLHttpRequest();
    }
    else if (window.ActiveXObject)
    {
        return new ActiveXObject("Microsoft.XMLHttp");
    }
}    以上的方法可以取得一些基本信息.但是關(guān)鍵的問題還是設(shè)置用戶cookie,判斷回訪,判斷最后一次訪問時(shí)間,并設(shè)置其GUID.這里看了很久沒有發(fā)現(xiàn)google是怎么做的...于是自己想了一些笨辦法.見一下代碼:
//瀏覽器特征信息
function BrowserInfo()
{
    brower[0] = navigator.appName;
    brower[7] = navigator.language;
    if(brower[0] == "Netscape")
    {
        var browerInfo = navigator.userAgent;
        brower[1] = browerInfo.substring(browerInfo.lastIndexOf(" ")+1,browerInfo.length);
        brower[0] = brower[1].substring(0,brower[1].lastIndexOf("/"));
        brower[1] = browerInfo.substring(browerInfo.lastIndexOf("/")+1,browerInfo.length);
        brower[7] = navigator.language;
    }
    else if(brower[0] == "Microsoft Internet Explorer")
    {
        brower[1] = navigator.userAgent.split(";")[1];
        brower[7] = navigator.userLanguage;
    }
    brower[2] = navigator.javaEnabled()?1:-1;
    brower[3] = getFlash();
    brower[4] = getOS();
   
    if (self.screen) {
        sr=screen.width+"x"+screen.height;
        sc=screen.colorDepth+"-bit";
    }
    else if (self.java)
    {
        var j=java.awt.Toolkit.getDefaultToolkit();
        var s=j.getScreenSize();
        sr=s.width+"x"+s.height;
   }
   //分辨率
   brower[5] = sr;
   //色深
   brower[6] = sc;
   //插件列表
   brower[8] = getPlugin();
}

//-----------------------獲得當(dāng)前地址-----------------------------
function getHref()
{
    return document.location.href;
}

//-----------------------cookie操作開始-----------------------------------------------------------------------------------------------------------------

function setCookie(name, value)
//設(shè)定Cookie值
{
    var expdate = new Date();
    var argv = setCookie.arguments;
    var argc = setCookie.arguments.length;
    var expires = 15768000;
    var path = (argc > 3) ? argv[3] : null;
    var domain = (argc > 4) ? argv[4] : null;
    var secure = (argc > 5) ? argv[5] : false;

    if(expires!=null)
    {
    //設(shè)置過(guò)期時(shí)間24小時(shí)
        expdate.setTime(uexp);
        document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
            + ((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
            + ((secure == true) ? "; secure=" : "");
   }
}

function delCookie(name)
//刪除Cookie
{
    var exp = new Date();
    exp.setTime (exp.getTime() - 1);
    var cval = getCookie (name);
    document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
}

//獲得Cookie的值
function getCookie(fname)
{
    var name,value;
    var cookies = new Object();
    var beginning,middle,end;

    beginning = 0;
    while(beginning < document.cookie.length)
    {
        middle = document.cookie.indexOf("=",beginning);
        end = document.cookie.indexOf(";",beginning);

        if(end == -1)
        {
            end = document.cookie.length;
        }
        if((middle > end) || (middle == -1))
        {
            name = document.cookie.substring(beginning,end);
            value = "";
        }
        else
        {
            name = document.cookie.substring(beginning,middle);
            value = document.cookie.substring(middle+1,end);
        }
        if(name == fname)
        {
            return unescape(value);
        }
        beginning = end + 2;
    }
}

//-----獲取GUID的cookie是否存在獲得---------------------------------------------------
function getCookieValue()
{
    var guid = getCookie("GUID");
    if(guid != null)
    {
        return guid;
    }
    else
    {
        return "noCookie";
    }
}

//---------------------獲得注冊(cè)用戶cookie---------------------------------------------
function getRegUserCookie()
{
    return ;
}
//-----------------------------cookie 操作完畢------------------------------------------------------------------------------------------------------------

//---------------------------得操作系統(tǒng)---------------------------
function getOS()
{
    var OSlist = new Array();
    var OSName = new Array();
    OSlist[0] = " Windows4.0";       OSName[0] = "Windows 95";
    OSlist[1] = " Windows 98";       OSName[1] = "Windows 98";
    OSlist[2] = " Windows NT 5.0";   OSName[2] = "Windows 2000";
    OSlist[3] = " Windows NT 5.1";   OSName[3] = "Windows xp";
    OSlist[4] = " Windows NT 5.2";   OSName[4] = "Windows Server 2003";
    var ua = navigator.userAgent.split(";");
    for(var i = 0; i < OSlist.length; i++)
    {
        if(ua[2] == OSlist[i])
            return OSName[i];
    }
    return ua[2];
}

//獲得插件
function getPlugin()
{
    var plugin = "";
    var ua = navigator.userAgent.split(";");
    if(ua.length < 4)
        return "";
    for(var i = 4; i < ua.length; i++)
    {
        plugin += ua[i] + ",";
    }
    return plugin.substring(0,plugin.length-2);
}
    需要說(shuō)明的一點(diǎn)是GetResidentTime這個(gè)函數(shù),google采用了img.load的方法加載了接收處理信息頁(yè)面的,需要再服務(wù)器端配置將后綴為.gif或你所取的其他形式的文件使用aspx的方式編譯運(yùn)行.因?yàn)槲以瓉?lái)考慮的是使用xmlHttp異步調(diào)用.但是頁(yè)面退出的時(shí)候有時(shí)候不執(zhí)行.所以就棄用了.代碼如下: function GetResidentTime()
{
    pageClose = new Date();
    minutes = (pageClose.getMinutes() - pageOpen.getMinutes());
    if(minutes < 0)
    {
        minutes = minutes + 60;
    }
    seconds = (pageClose.getSeconds() - pageOpen.getSeconds());
    if(seconds < 0){ seconds += 60;}
    time = (seconds + (minutes * 60));
   
//------------------------修改此處為接收鏈接地址 XML 異步傳輸------------------------------------
//    var xmlHttp = createXMLHttpRequest();
//    xmlHttp.open("POSt", reqURL + firstvisit.aspx?" + StrPara(), false);
//    xmlHttp.send(null);
//----------------------------圖片形式傳遞-------------------------------------------------------
    if(isReturn() == false)
    {
        var i = new Image(1,1);

        i.src = reqURL + "firstVisit.aspx?" + StrPara() + "&GUID=" + GUID;
        i.onload = function() {LoadVoid();}

        //進(jìn)入頁(yè)面的信息
        if(getCookieValue("GUID") == "noCookie"){return ;}
        i.src = reqURL + "pageView.gif?" + pageView() + "&st=" + time;
        i.onload=function() {LoadVoid();}
    }
    else
    {

        var i=new Image(1,1);
        i.src = reqURL + "pageView.gif?" + pageView() + "&st=" + time;
        i.onload=function() {LoadVoid();}
    }
}    最后就是調(diào)用了.我使用了window.onunload = GetResidentTime
    傳遞的參數(shù)大家可以打印出來(lái)看一下.應(yīng)該可以明白其意思.
    剩下的就是服務(wù)器端的處理了,在服務(wù)器端處理其實(shí)相當(dāng)簡(jiǎn)單.取得request的值,驗(yàn)證并保存入數(shù)據(jù)庫(kù).現(xiàn)在有了數(shù)據(jù),分析的事情就由用戶按照自己的要求來(lái)處理了..補(bǔ)充一句,ip地址是由服務(wù)器端來(lái)取得保存的.
    使用的時(shí)候記得一定將其放到服務(wù)器端,然后使用<javascript language="javascript" type="text/javascript" src=服務(wù)器地址+路徑+"statistics.js"> </script>   附上完整的代碼http://m.survivalescaperooms.com/Files/BlackSoul/statistic.rar下載.
    該例子我在IE,Firefox,netscape下面測(cè)試都很正常.搞了一個(gè)月,總算有所成就了.但是還有很多需要改進(jìn)的地方,希望做過(guò)的,感興趣的朋友多多指點(diǎn)交流.

http://blacksoul.VEVb.com/archive/2006/05/19/404563.html