微信小程序之事件（bindtap和catchtap）[通俗易懂]

微信小程序之事件（bindtap和catchtap）

微信小程序的事件请参考：https://mp.weixin.qq.com/debug/wxadoc/dev/framework/view/wxml/event.html。在这里不必啰嗦。
我们都知道bindtap和catchtap都是当用户点击该组件的时候会在该页面对应的Page中找到相应的事件处理函数。但是bind事件绑定不会阻止冒泡事件向上冒泡，catch事件绑定可以阻止冒泡事件向上冒泡。如：

<view id="outer" bindtap="handleTap1">
  	outer view
    <view id="middle" catchtap="handleTap2">
    middle view
    <view id="inner" bindtap="handleTap3">
      inner view
    </view>
</view>

Page{
    handleTap1:functionevent){  //点击输出outer view bindtap
      console.log"outer view bindtap")
    },
    handleTap2: function event) {  //点击输出middle view
      console.log"middle view catchtap")
    },
    handleTap3: function event) {  //点击输出inner view bindtap  middle view catchtap
      console.log"inner view bindtap")
    },
})

<view id="outer" bindtap="handleTap1">
  	outer view
    <view id="middle" bindtap="handleTap2">
    middle view
    <view id="inner" bindtap="handleTap3">
      inner view
    </view>
</view>

Page{
    handleTap1:functionevent){  //点击输出outer view bindtap
      console.log"outer view bindtap")
    },
    handleTap2: function event) {  //点击输出outer view bindtap middle view
      console.log"middle view catchtap")
    },
    handleTap3: function event) {  //点击输出outer view bindtap inner view bindtap  middle view catchtap
      console.log"inner view bindtap")
    },
})