1 <!-- wxml -->
 2 <view>
 3   <button type="warn" size="mini" bindtap="dian">点老子呀</button>
 4 </view>
 5 
 6 <view>花木兰{{num}}</view>
 7 
 8 
 9 <!-- js -->
10   data: {
11     num:0
12   },
13   dian:function(){
14     this.setData({
15       num:++this.data.num
16     })
17   }

 1 <!-- wxml -->
 2 <view>
 3   <button type="warn" size="mini" bindtap="dian" data-a="100">点老子呀</button>
 4 </view>
 5 <view>花木兰{{num}}</view>
 6 
 7 
 8 <!-- js -->
 9   data: {
10     num:0
11   },
12   dian:function(){
13     console.log(e.currentTarget.dataset.a)
14     this.setData({
15       num: this.data.num + Number(e.currentTarget.dataset.a) 
16     })
17   }

<!-- 点击事件         bindtap 会有冒泡事件   catchtap 不会有冒泡事件 -->
bindtap   catchtap

<!--长按事件 -->
bindlongtap

<!-- 触摸开始 -->
bindtouchstart

<!-- 触摸结束 -->
bindtouchend