//获取访客ID
var visitorId = getCookie("visitorId");
if (visitorId == null) {
    var s = [];
    var hexDigits = "0123456789abcdef";
    for (var i = 0; i < 32; i++) {
        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
    }
    visitorId = s.join("");
}
setCookie("visitorId", visitorId, 30); //访客ID保留30天
//获取访问页面
var pageUrl = location.href;
//获取来源网站
var sourceWebsite = "";
var referrer = document.referrer;
if (referrer != "") {
    var referrerElement = document.createElement('a');
    referrerElement.href = referrer;
    var referrerHostname = referrerElement.hostname;
    var locationHostname = location.hostname;
    var referrerPort = referrerElement.port != "" && referrerElement.port != 80 && referrerElement.port != 443 ? referrerElement.port : "";
    var locationPort = location.port != "" && location.port != 80 && location.port != 443 ? location.port : "";
    if (referrerHostname != locationHostname || referrerPort != locationPort) {
        //其他网站
        sourceWebsite = referrerHostname + (referrerPort != "" && referrerPort != 80 && referrerPort != 443 ? ":" + referrerPort : "");
    }
}
//提交访问记录
ajaxHelper("/Visit/AddVisit", {
    visitorId: visitorId,
    pageUrl: pageUrl,
    sourceWebsite: sourceWebsite
});