效果：
image
image
js：
var that
// 用来实现最后十秒强调的动画
var animation = wx.createAnimation({
duration: 300,
timingFunction: 'ease',
})
/**
* [倒计时函数，最后十秒只显示一个数字，且有放大动画效果]
* @param {Number} minutes [分钟]
* @param {Number} second [秒]
* @param {function} TimeoutCallback [倒计时结束执行的函数]
*/
function countDown(minutes, second, TimeoutCallback) {
var interval = () => {
if (minutes > 0 && second >= 0 || second > 10){
that.setData({
time: minutes + ':' + second--
})
}else if (minutes > 0){
minutes--;
second = 59;
that.setData({
time: minutes + ':' + second--
})
}else if (second >= 0){
animation.scale(1.5,1.5).step()
animation.scale(1,1).step()
that.setData({
time: second--,
animationData:animation.export()
})
}else{
clearInterval(timer)
// 倒计时结束回调
if (typeof TimeoutCallback !== 'function'){
return
}
TimeoutCallback()
}
}
// 因为定时器会延时一个间隔单位，所以先执行一次
interval()
var timer = setInterval(interval,1000)
}
Page({
onLoad: function(){
that = this
countDown(1,5)
}
})
wxml：
<view style="display: inline-block;" animation="{{animationData}}">{{time}}</view>
