document.addEventListener("DOMContentLoaded", function () {
  //以下变量统一使用var,禁用let,兼容IE
  var customerVisitUrl = "/api/customerVisit/";
  var customerVisitData = {};
  var requestPostType = "POST";

  function ajax(method, url, data, success) {
    var xhr = new XMLHttpRequest();
    xhr.open(method, url, true);
    xhr.setRequestHeader("Content-Type", "application/json");
    xhr.onreadystatechange = function () {
      if (xhr.readyState === 4) {
        if (xhr.status === 200) {
          success(xhr.responseText);
        } else {
          console.log("Error: " + xhr.status);
        }
      }
    };
    xhr.send(data);
  }

  // 获取当前网页的协议+域名
  function getPageBaseUrl() {
    var baseURL = "";
    if (!window.location.origin) {
      // 兼容IE，IE11版本下location.origin为undefined
      window.location.origin =
        window.location.protocol +
        "//" +
        window.location.hostname +
        (window.location.port ? ":" + window.location.port : "");
    } else {
      baseURL = window.location.origin;
    }
    return baseURL;
  }

  if (
    navigator.userAgent.match(/Mobi/i) ||
    navigator.userAgent.match(/Android/i) ||
    navigator.userAgent.match(/iPhone/i)
  ) {
    customerVisitData.device_port = "2";
  } else {
    customerVisitData.device_port = "1";
  }
  customerVisitData.url = window.location.href;
  customerVisitData.domain = getPageBaseUrl() + "/";
  customerVisitData.referrer_url = document.referrer;
  ajax(
    requestPostType,
    customerVisitUrl,
    JSON.stringify(customerVisitData),
    function (data) {}
  );
});