微信小程序实现点击卡片 翻转效果

<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>

.main {
 position: absolute;
 top: 50%;
 left: 50%;
 width: 300px;
 height: 300px;
 transform: translate(-50%,-50%);
 -webkit-perspective: 1500;//子元素获得透视效果 
 -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'
 })
 // 点击正面
 
 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(),
 })
 }
 // 点击背面
 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(),
 })
 }
 },
})