开始时间至结束时间大致规则：

laydate之开始时间永远小于等于结束时间，结束时间永远大于等于开始时间。开封即用拿走不谢~

<form class="layui-form screen-box" action="">
    <div class="layui-form-item">
        <label class="layui-form-label">选择日期:</label>
        <div class="layui-input-inline">
            <input type="text" id="start" name="params['startTime']" lay-verify="required" placeholder="请选择开始时间" autocomplete="off" class="layui-input" readonly>
        </div>
        <div class="layui-input-inline">
            <input type="text" id="end" name="params['endTime']" lay-verify="required" placeholder="请选择结束时间" autocomplete="off" class="layui-input" readonly>
        </div>
        <div class="layui-input-inline t-input-inline">
            <input type="text" name="params['keyword']" lay-verify="required" placeholder="请输入关键标识" autocomplete="off" class="layui-input">
        </div>
        <div class="layui-input-inline">
            <button class="layui-btn" lay-submit lay-filter="*"><i class="layui-icon"></i>查找</button>
        </div>
    </div>
</form>


  //开始时间
  var startTime = laydate.render({
      elem: '#start', //指定元素
      max: getNowFormatDate(),
      done: function (value, dates) {
          endTime.config.min = {
              year: dates.year,
              month: dates.month - 1, //关键
              date: dates.date,
          };
          $('#start').blur()
      }
  });
   //结束时间
  var endTime = laydate.render({
      elem: '#end', //指定元素
      max: getNowFormatDate(),
      done: function (value, dates) {
          startTime.config.max = {
              year: dates.year,
              month: dates.month - 1, //关键
              date: dates.date,
          };
          $('#start').blur()
      }
  });

  //获取当前的日期时间 格式“yyyy-MM-dd”
  function getNowFormatDate() {
      var date = new Date();
      var seperator1 = "-";
      var month = date.getMonth() + 1;
      var strDate = date.getDate();
      if (month >= 1 && month <= 9) {
          month = "0" + month;
      }
      if (strDate >= 0 && strDate <= 9) {
          strDate = "0" + strDate;
      }
      var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate
      return currentdate;
  }