众所周知，当当网有一套很完善的推荐系统机制。正对个人数据数据的推荐主要还是来自于对个人数据的捕获。从当当网发现了一个自己做的用户行为跟踪系统，处于学习的目的，大家一起来分析。当当网的用户行为跟踪系统出了跟踪用户访问的页面外，还跟踪用户在页面上的具体点击。下面就大家一起来分析。
以下主要跟踪的内容：
浏览器储存的Cookies：
具体的跟踪代码：（已经添加注释）
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if (typeof ddclick_page_tracker == "undefined") { //搜索引擎URL辨别 function __dd_Campaign() { var f = [ ["baidu", "word"], ["baidu", "wd"], ["google", "q"], ["soso", "w"], ["sogou", "query"], ["youdao", "q"], ["bing", "q"], ["yahoo", "p"], ["ask", "q"] ]; this.transCampaignURL = function (a) { var b = /^https?:\/\/(.*?)($|\/.*)/; var c = b.exec(a); if (c != null) { var d = ""; d = c[1]; var e = URLUtil.getKeyValueArray(a); for (var i = 0; i < f.length - 1; i++) { if (d.indexOf(f[i][0]) > 0) { if (typeof e[f[i][1]] != "undefined") { d = d + "|" + e[f[i][1]]; return d } } } return d + "|" } else { return a + "|" } } }; //解析关键词 var URLUtil = { getKeyValueArray: function (a) { var b = new Object(); if (a.indexOf("?") > 0) { var c = a.substring(a.indexOf("?") + 1); if (c.indexOf("#") > 0) { c = c.substring(0, c.indexOf("#")) } var d = c.split("&"); for (var i = 0; i < d.length; i++) { b[d[i].split("=")[0]] = d[i].split("=")[1] } } return b } }; //设置Cookies var CookieUtil = { get: function (a) { var b = encodeURIComponent(a) + "=", cookieStart = document.cookie.indexOf(b), cookieValue = null; if (cookieStart > -1) { var c = document.cookie.indexOf(";", cookieStart); if (c == -1) { c = document.cookie.length } cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + b.length, c)) } return cookieValue }, set: function (a, b, c, d, e, f) { var g = encodeURIComponent(a) + "=" + encodeURIComponent(b); if (c instanceof Date) { g += "; expires=" + c.toGMTString() } if (d) { g += "; path=" + d } if (e) { g += "; domain=" + e } if (f) { g += "; secure" } document.cookie = g }, unset: function (a, b, c, d) { this.set(a, "", new Date(0), b, c, d) } }; //添加句柄跟踪 function addEventHandler(a, b, c) { if (a.addEventListener) { a.addEventListener(b, c, false) } else if (a.attachEvent) { a.attachEvent("on" + b, c) } else { a["on" + b] = c } }; //删除句柄跟踪 function removeEventHandler(a, b, c) { if (a.removeEventListener) { a.removeEventListener(b, c, false) } else if (a.detachEvent) { a.detachEvent("on" + b, c) } else { a["on" + b] = null } }; //页面跟踪 function PageTracker() { var k = 0; var l = ""; var o = 0; var p = ""; var q = ""; var r = escape(","); var s = "dangdang.com"; var t = ["<a href="http://click.dangdang.com/">http://click.dangdang.com/</a>", "<a href="https://click.dangdang.com/">https://click.dangdang.com/</a>"]; var u = "http:"; try { u = document.location.protocol } catch (e) {} var v = ("https:" == u ? t[1] : t[0]); //获取页面渠道来源（优先判断浏览器是否带#dd_refer=,如果有获取后面的参数，如果没有浏览器referer） var w = function (a) { if (a.indexOf("#dd_refer=") > 0) { p = unescape(a.substring(a.indexOf("#dd_refer=") + "#dd_refer=".length)) } else { p = document.referrer; if (!p) { try { if (window.opener && window.opener.location) { p = window.opener.location.href } } catch (e) {} } } p = p.replace(/\t|\n|\r/g, "") }; //拼接请求URL //调取方法： //跟踪页面浏览：x('', '', '', p, q, '', '1', document.title.replace(/\t|\n|\r/g, ""), ''); //跟踪页面点击：x('', objName, regionIds, p, q, c, '2', document.title.replace(/\t|\n|\r/g, ""), objTagName) //异步调取？：x('', '', '', p, a, '', '5', document.title.replace(/\t|\n|\r/g, ""), '') //第一个参数a：空 //第二个参数b：页面中的锚点 //第三个参数c：记录多个点击锚点 id //第四个参数d：流量来源URL //第五个参数e：当前页面页面URL //第六个参数f：页面转向URL //第七个参数g：固定值,记录跟踪类型 //第八个参数h：页面标题 //第九个参数i：记录页面类 class //参数l：&out_refer= //参数k：&visit_count= 访问次数 //参数o：&is_first_pv= //参数i：&ctr_type= var x = function (a, b, c, d, e, f, g, h, i) { if (b == null) b = ''; var j = new Image(); j.src = v + 'page_tracker.aspx?m_id=' + a + '&o_id=' + b + '&region_ids=' + c + '&out_refer=' + escape(l) + '&refer_url=' + escape(d) + '&url=' + escape(e) + '&to_url=' + escape(f) + '&type=' + g + '&visit_count=' + k + '&is_first_pv=' + o + '&ctr_type=' + i + "&r=" + Math.random() + '&title=' + escape(h); o = 0 }; //记录点击类型（表单统计） var z = function (a) { if (a == null || a.tagName == null) return false; if (a.tagName.toLowerCase() == "area" || a.tagName.toLowerCase() == "a" || (a.tagName.toLowerCase() == "input" && (a.type.toLowerCase() == "button" || a.type.toLowerCase() == "sumbit" || a.type.toLowerCase() == "image"))) { return true } if (a.getAttribute("onclick") != "undefined" && a.getAttribute("onclick") != null) { return true } return false }; //获取时间+随机数 //主要用途：标明唯一身份访问 var A = function () { var n = new Date(); var y = n.getFullYear() + ''; var m = n.getMonth() + 1; if (m < 10) m = "0" + m; var d = n.getDate(); if (d < 10) d = "0" + d; var H = n.getHours(); if (H < 10) H = "0" + H; var M = n.getMinutes(); if (M < 10) M = "0" + M; var S = n.getSeconds(); if (S < 10) S = "0" + S; var a = "00" + n.getMilliseconds(); a = a.substr(a.length - 3, 3); return y + m + d + H + M + S + a + Math.floor(100000 + Math.random() * 900000) + Math.floor(100000 + Math.random() * 900000) + Math.floor(100000 + Math.random() * 900000) }; //获取Cookies的值 var B = function (a) { var b = document.cookie.match(new RegExp("(^| )" + a + "=([^;]*)(;|$)")); if (b != null) return unescape(b[2]); return '' }; //设置Cookies值 var C = function () { if (B('__permanent_id') == '' || !/^\d{35}$/.test(B('__permanent_id'))) { var a = new Date(2020, 1, 1); CookieUtil.set("__permanent_id", A(), a, "/", s) } if (CookieUtil.get("__ddclicka")) { CookieUtil.unset("__ddclicka", null, s) } var b = "0000000001"; //有效期一年 var c = new Date(); c.setTime(c.getTime() + 2 * 365 * 24 * 60 * 60 * 1000); //有效期半小时 var d = new Date(); d.setTime(d.getTime() + 30 * 60 * 1000); var e; if (CookieUtil.get("__ddclick_visit") && CookieUtil.get("__ddclick_visit").split(".").length == 2) { k = CookieUtil.get("__ddclick_visit").split(".")[1]; if (isNaN(parseInt(k))) { k = 0 } if (!CookieUtil.get("__trace_id") || !CookieUtil.get("__ddclickc")) { k++; e = b + "." + k; CookieUtil.set("__ddclick_visit", e, c, "/", s); CookieUtil.set("__trace_id", A(), d, "/", s); CookieUtil.set("__ddclickc", b, null, "/", s); o = 1 } else { CookieUtil.set("__trace_id", A(), d, "/", s) } } else { k = 1; e = b + "." + k; CookieUtil.set("__ddclick_visit", e, c, "/", s); CookieUtil.set("__trace_id", A(), d, "/", s); CookieUtil.set("__ddclickc", b, null, "/", s); o = 1 } D() }; //来源关键词记录 var D = function () { var a = new Date(); a.setTime(a.getTime() + 24 * 60 * 60 * 1000); if (p == "" || p == null || p == "undefined") { if (o) { l = "|"; CookieUtil.set("out_refer", l, a, "/", s) } } else { var b = /^https?:\/\/[\w\.]*?dangdang/; if (!b.test(p)) { __dd_Campaign_obj = new __dd_Campaign(); l = __dd_Campaign_obj.transCampaignURL(p); CookieUtil.set("out_refer", l, a, "/", s) } } l = CookieUtil.get("out_refer") }; //跟踪页面点击 this.trackPageclick = function (e) { e = e || window.event; if (e == null) return; var a = e.srcElement || e.target; var b = true; while (true) { b = z(a); if (b) { break } else { a = a.parentNode; if (a == null || a.tagName == null || a.tagName.toLowerCase() == "body" || a.tagName.toLowerCase() == "html") return } } var c = objName = regionIds = objTagName = ""; if (a.tagName) objTagName = a.tagName; if (a.href) c = a.href; if (a.id) objName = a.id; else if (a.name) objName = a.name; a = a.parentNode; while (a != null && a.tagName != null && a.tagName.toLowerCase() != "body" && a.tagName.toLowerCase() != "html") { if (a.id) { regionIds += a.id + r } else if (a.name) { regionIds += a.name + r } else if (a.getAttribute) { var d = a.getAttribute("name"); if (d) { regionIds += d + r } } a = a.parentNode } C(); x('', objName, regionIds, p, q, c, '2', document.title.replace(/\t|\n|\r/g, ""), objTagName) }; //跟踪页面浏览 this.trackPageview = function () { if (arguments.length > 0) { p = q; q = arguments[0]; q = q.replace(/\t|\n|\r/g, "") } else { try { q = location.href } catch (e) { q = document.URL } if (typeof _ozurltail != "undefined") { q = q + _ozurltail } q = q.replace(/\t|\n|\r/g, ""); w(q) } C(); x('', '', '', p, q, '', '1', document.title.replace(/\t|\n|\r/g, ""), ''); removeEventHandler(document, "click", this.trackPageclick); addEventHandler(document, "click", this.trackPageclick) }; //发送数据请求 this.trackPingPHP = function (a) { a = a.replace(/\t|\n|\r/g, ""); w(a); x('', '', '', p, a, '', '5', document.title.replace(/\t|\n|\r/g, ""), '') } }; ddclick_page_tracker = new PageTracker(); ddclick_page_tracker.trackPageview(); //监测页面点击 function __dd_trackPageclick(e) { if (e == null) e = window.event || arguments.callee.caller.arguments[0]; ddclick_page_tracker.trackPageclick(e) }; //监测页面浏览 function __dd_trackPageview_forAjax(a) { ddclick_page_tracker.trackPageview(a) } } |
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很不错的监控代码，收藏了。