text: $(function () {
      // select 元素
      var $selectorProvince = $("#province");
      var $selectorCity = $("#city");
      var $selectorDistrict = $("#district");
  
      // 地区的默认值，通过select的default-data获取
      var defaultProvince = $selectorProvince.attr('data-default');
      var defaultCity = $selectorCity.attr('data-default');
      var defaultDistrict = $selectorDistrict.attr('data-default');
  
      if (!defaultProvince) defaultProvince = currentProvince;
      if (!defaultCity) defaultCity = currentCity;
  
      // 初始化
      initSelector($selectorProvince, provinces);
      initSelector($selectorCity, getCities(defaultProvince));
      initSelector($selectorDistrict, getDistricts(defaultProvince, defaultCity));
  
      // 选择省份
      $selectorProvince.change(function () {
          currentProvince = $(this).val();
          initSelector($selectorCity, getCities(currentProvince));
          $selectorCity.trigger('change');
      })
  
      // 选择城市
      $selectorCity.change(function () {
          currentCity = $(this).val();
          initSelector($selectorDistrict, getDistricts(currentProvince, currentCity));
      })
  
      // 初始化选择框 其中 data 表示包含所有选择项的数组
      function initSelector(selectObj, data) {
          // 空的数据直接隐藏select元素
          if (data == "") {
              selectObj.hide();
              selectObj.html("");
          } else {
              selectObj.show();
          }
  
          var str = "";
          var selected = selectObj.attr('data-default');
          for (var i = 0; i < data.length; i++) {
              var _data = data[i];
              if (_data === selected) {
                  str += '<option selected="selected" value="' + _data + '">' + _data + '</option>';
              } else {
                  str += '<option value="' + _data + '">' + _data + '</option>';
              }
          }
          selectObj.html(str);
      }
  })
  