1. View

flex-direction:row:横向布局模式；如果不设置该属性，默认为横向

flex-direction:column:纵向布局。

界面样式代码

注意：1.如果想要改模式有效，父控件必须设置显示方式为flex模式，display:flex;

           2.要想控件的背景颜色显示出来，必须view设置大小，否则background-color属性无效。

2.scroll-view

1. <view class="section">
2. <view class="section__title">vertical scroll</view>
3. <!--如果是垂直滚动，必须设置scrollview的高度，切记-->
4. <scroll-view scroll-y="true" style="height: 200px;" bindscrolltoupper="upper" bindscrolltolower="lower" bindscroll="scroll" scroll-into-view="{{toView}}" scroll-top="{{scrollTop}}">
5. <view id="green" class="scroll-view-item bc_green"></view>
6. <view id="red" class="scroll-view-item bc_red"></view>
7. <view id="yellow" class="scroll-view-item bc_yellow"></view>
8. <view id="blue" class="scroll-view-item bc_blue"></view>
9. </scroll-view>
10.  
11. <view class="btn-area">
12. <button size="mini" bindtap="tap">click me to scroll into view </button>
13. <button size="mini" bindtap="tapMove">click me to scroll</button>
14. </view>
15. </view>
16. <view class="section section_gap">
17. <view class="section__title">horizontal scroll</view>
18. <scroll-view class="scroll-view_H" scroll-x="true" style="width: 100%"