layui如何获取复选框的值以及如何为复选框赋值

=========================================HTML=============================================

<div class="layui-form-item">

   <div class="layui-col-md12">

         <div>

               <label class="layui-form-label">类型</label>

               <div class="layui-input-block">

                    <input type="checkbox" name="AllDay" id="AllDay" lay-filter="test1" value="全天" title="全天">

                    <input type="checkbox" name="IsEnd" id="IsEnd" lay-filter="test1" value="结束时间" title="结束时间">

               </div>

         </div>

        <span></span>

   </div>

</div>

========================================JS=============================================

var allDayCheck = document.getElementById("AllDay").checked;

var isEndCheck = document.getElementById("IsEnd").checked;