/**
* 动画实现
* @method animationShow
* @param {that} 当前卡片
* @param {opacity} 透明度
* @param {delay} 延迟
* @param {isUp} 移动方向
*/
animationShow: function (that,opacity, delay, isUp) {
let animation = wx.createAnimation({
 duration: 1000,
 timingFunction: 'ease',
 delay: delay
});
<!--考虑到还需要隐藏掉当天之前的卡片，做如下判断来赋予不同的动画效果-->
if (isUp == 'down') {
 animation.translateY(0).opacity(opacity).step().translateY(-80).step();
} else if (isUp == 'up') {
 animation.translateY(0).opacity(opacity).step().translateY(-140).opacity(0).step()
} else {
 animation.translateY(0).opacity(opacity).step()
}
let params = ''
params = animation.export()
return params
},

.init{
 opacity: 0;
 transform: translateY(-80px)
}

for (let i = 0; i < transData.length; i++) {
if (i == 0) {
 transData[i].animation = that.app.slideupshow(that, 1, 0, 'up')
} else {
 transData[i].animation = that.app.slideupshow(that, 1, (i + 1) * 10, 'down')
}
}