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                1. event.target.dataset.title: 獲取正在被點擊的組件的設置的title屬性 2.event.currentTarget.dataset.title 獲取目標組件設置的title屬性(事件捕獲的組件) ``` --wxml-- <view class="parent" catchtap="click" data-title="parent"> <view class="child" data-title="child"> </view> </view> ``` ![](https://box.kancloud.cn/10f6f6f4454d930b92eaaed7eb7cb191_183x176.png) ``` --js-- click(){ console.log(event.target.dataset.title); } ``` 此時點擊深色區域輸出'child' 點擊淺色區域輸出'parent' 當前點擊的是哪個元素,則輸出哪個event的title屬性,不存在冒泡干擾 ``` --js-- click(){ console.log(event.currentTarget.dataset.title); } ``` 因為此時`click`綁定在`parent`上,所以currentTarget就只會是`parent`,所以不管點深色還是淺色區域,都只會輸出'parent'
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