var start = {
                  istime: true,
                  format: 'YYYY-MM-DD hh:mm:ss',
                  max: '2099-06-16',
                  istoday: true,
                  choose: function (datas) {
                      end.min = datas; //开始日选好后，重置结束日的最小日期
                      timeConflictJudgment()
                  }
              };
    
              var end = {
                  istime: true,
                  format: 'YYYY-MM-DD hh:mm:ss',
                  max: '2099-06-16',
                  istoday: true, 
                  choose: function (datas) {
                      start.max = datas; //结束日选好后，重置开始日的最大日期
                      timeConflictJudgment()
                  }
              };
                
              document.getElementById('carInsuranceStartTime').onclick = function () {
                  start.elem = this;
                  laydate(start);
              };
              document.getElementById('carInsuranceEndTime').onclick = function () {
                  end.elem = this;
                  laydate(end);
              };