<view bindtap="viewHandle">
<van-button type="primary" catchtap="btnHandel">按钮</van-button>
</view>
1. bindtap
2. catchtap 阻止事件冒泡
<view bindtap="viewHandle">
<van-button type="primary" catchtap="btnHandel">按钮</van-button>
</view>
1. bindtap
2. catchtap 阻止事件冒泡