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                1. `bindtap`與`catchtap`都是點擊事件 2. `bindtap`存在事件冒泡 3. `catchtap`可以消除事件冒泡 ``` --wxml-- <view class="parent" bindtap="click" data-title="parent"> <view class="child" bindtap="c_click" data-title="child"> </view> </view> ``` ![](https://box.kancloud.cn/10f6f6f4454d930b92eaaed7eb7cb191_183x176.png) ``` --js-- click(){ console.log("parent"); }, c_click(){ console.log("child"); } ``` 在如上代碼中,點擊深色區域,因為`bindtap`存在事件冒泡,所以會輸出'parent'和'child', 即:兩個點擊事件都進行了 而將子元素中的`bindtap`替換成`catchtap`則不會發生冒泡 ``` <view class="parent" bindtap="click" data-title="parent"> <view class="child" catchtap="c_click" data-title="child"> </view> </view> ``` 此時點擊深色區域只會輸出'child'
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