微信小程序 實現點擊卡片 翻轉效果

動畫效果：  

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wxml:

<view class='main'>
   <!--正面的框  -->
   <view class="box b1" animation="{{animationMain}}" bindtap='rotateFn' data-id="1" >
     <image src=""></image>
   </view>
   <!--背面的框  -->
   <view class="box b2" animation="{{animationBack}}"  bindtap='rotateFn' data-id="2">
     <image src=""></image>
   </view>
</view>

wxss: 

.main {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 300px;
  transform: translate(-50%,-50%);
  -webkit-perspective: 1500;
  -moz-perspective: 1500;
}
 
.box {
  position: absolute;
  top: 0;
  left: 0;
  width: 300px;
  height: 300px;
  transition: all 1s;
  backface-visibility: hidden;
  border-radius: 10px;
  cursor: pointer;
}
.box image{
	border-radius: 10px;
	width: 100%;
	height: 100%;
}
.b1{
  background:skyblue;
}
.b2 {
  background:tomato;
  transform: rotateY(-180deg);
}

js: 

Page({
  data: {
  	animationMain:null,//正面
  	animationBack:null,//背面
  },
  rotateFn(e) {
  	var id = e.currentTarget.dataset.id
  	this.animation_main = wx.createAnimation({
        duration:400,
        timingFunction:'linear'
      })
      this.animation_back = wx.createAnimation({
        duration:400,
        timingFunction:'linear'
      })
  	// 點擊正面

  	if (id==1) {
      this.animation_main.rotateY(180).step()
      this.animation_back.rotateY(0).step()
      this.setData({
      	animationMain: this.animation_main.export(),
      	animationBack: this.animation_back.export(),
      })
  	}
  	// 點擊背面
  	else{
      this.animation_main.rotateY(0).step()
      this.animation_back.rotateY(-180).step()
      this.setData({
      	animationMain: this.animation_main.export(),
      	animationBack: this.animation_back.export(),
      })
  	}
  },
})