layui 表单验证不生效的问题

form 需在div 内部

<div class="layui-form"><form class="layui-form layui-form-pane" action="" lay-filter="">

<div class="layui-form-item">
        <div class="layui-inline">
            <label class="layui-form-label">行序</label>
            <div class="layui-input-block">
                <input type="text" name="dispOrder" lay-verify="required|number" placeholder="请输入" autocomplete="off" class="layui-input" value="">
            </div>
        </div>
    </div>

</form></div>