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）
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 | 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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