当一个组件上的事件被触发后，该事件会向父节点传递。

bind事件名

<text>事件的冒泡</text>
<view class="one" bindtap="handlerOne">one
    <view class="two" bindtap="handlerTwo">two
        <view class="three" bindtap="handlerThree">three</view>
    </view>
</view>

阻止事件冒泡

catch事件名

<text>事件的冒泡</text>
<view class="one" bindtap="handlerOne">one
    <view class="two" catchtap="handlerTwo">two
        <view class="three" bindtap="handlerThree">three</view>
    </view>
</view>

事件捕获

捕获阶段位于冒泡阶段之前，且在捕获阶段中，事件到达节点的顺序与冒泡阶段恰好相反。需要在捕获阶段监听事件时，可以采用:

capture-bind:事件名

<view class="one" capture-bind:tap="handlerOne">one
    <view class="two" capture-bind:tap="handlerTwo">two
        <view class="three" capture-bind:tap="handlerThree">three</view>
    </view>
</view>

阻止事件捕获

capture-catch:事件名

capture-catch关键字，后者将中断捕获阶段和取消冒泡阶段。

<view class="one" capture-bind:tap="handlerOne">one
    <view class="two" capture-catch:tap="handlerTwo">two
        <view class="three" capture-bind:tap="handlerThree">three</view>
    </view>
</view>