实现倒计时功能
直接上代码
// 计算时间
countDown: function (time) {
var date2
var date1
var self = this
window.requestAnimationFrame(step)
function step() {
date1 = new Date().getTime(); //开始时间
if (date2 == undefined) {
date2 = new Date().getTime() + time; //结束时间
}
var date3 = date2 - date1; //时间差的毫秒数
//计算出相差天数
var days = Math.floor(date3 / (24 * 3600 * 1000))
//计算出小时数
var leave1 = date3 % (24 * 3600 * 1000) //计算天数后剩余的毫秒数
var hours = self.zeroFill(Math.floor(leave1 / (3600 * 1000)))
//计算相差分钟数
var leave2 = leave1 % (3600 * 1000) //计算小时数后剩余的毫秒数
var minutes = self.zeroFill(Math.floor(leave2 / (60 * 1000)))
//计算相差秒数
var leave3 = leave2 % (60 * 1000) //计算分钟数后剩余的毫秒数
var seconds = self.zeroFill(Math.round(leave3 / 1000))
let temptime = self.time = days + "天" + hours + "小时" + minutes + "分钟" + seconds + "秒"
if (temptime == '1天00小时00分钟00秒') {
self.time = '24小时00分钟00秒'
} else {
self.time = temptime.substring(temptime.length - 11, temptime.length)
}
if (self.time.substring(9, 10) == 0 && self.time.substring(8, 9) == 6) {
self.timeObj.sOne = 9
self.timeObj.sTwo = 5
} else {
self.timeObj.sOne = self.time.substring(9, 10)
self.timeObj.sTwo = self.time.substring(8, 9)
}
self.timeObj.mOne = self.time.substring(5, 6)
self.timeObj.mTwo = self.time.substring(4, 5)
self.timeObj.hOne = self.time.substring(1, 2)
self.timeObj.hTwo = self.time.substring(0, 1)
if (self.time == '00小时00分钟00秒') {
console.log('时间到')
return
} else {
window.requestAnimationFrame(step)
}
}
},
zeroFill: function (num) {
num = '' + num
if (num.length == 1) {
num = '0' + num
}
return num
},
运行时调用函数，参数传倒计时的毫秒数
this.countDown(86400000) //时间初始化
复制代码写的比较草率，有问题联系我。