lass="layui-form-label">选择框</label>',
            '<div class="layui-input-block">',
              '<select name="field2">',
                '<option value="A">A</option>',
                '<option value="B">B</option>',
              '<select>',
            '</div>',
          '</li>',
          '<li class="layui-form-item" style="text-align:center;">',
            '<button type="submit" lay-submit lay-filter="*" class="layui-btn">提交</button>',
          '</li>',
        '</ul>'].join(''),
      