google的分析(analytics)js代码分析以及重写(2)

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

//---------------------------获得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);
}

//--------------------------设置异步传输-----------------------------------
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.但是关键的问题还是设置用户cookie,判断回访,判断最后一次访问时间,并设置其GUID.这里看了很久没有发现google是怎么做的...于是自己想了一些笨办法.见一下代码:
//浏览器特征信息
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();
}

//-----------------------获得当前地址-----------------------------
function getHref()
{
return document.location.href;
}

//-----------------------cookie操作开始-----------------------------------------------------------------------------------------------------------------

function setCookie(name, value)
//设定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)
{
//设置过期时间24小时
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)
//删除Cookie
{
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = getCookie (name);
document.cookie = name "=" cval "; expires=" exp.toGMTString();
}

//获得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;
}
}

//-----获取GUID的cookie是否存在获得---------------------------------------------------
function getCookieValue()
{
var guid = getCookie("GUID");

标签：

版权申明：本站文章部分自网络，如有侵权，请联系：west999com@outlook.com
特别注意：本站所有转载文章言论不代表本站观点，本站所提供的摄影照片，插画，设计作品，如需使用，请与原作者联系，版权归原作者所有