//倒计时
function countDown(time) {
//当前时间
let nowTime = +new Date();
//目标时间
let inputTime = +new Date(time);
//相差的时间 秒
let times = (inputTime - nowTime) / 1000;
//时间格式化
let day = parseInt(times / 60 / 60 / 24);//天
day = day < 10 ? '0' + day : day;
let hour = parseInt(times / 60 / 60 % 24);//时
hour = hour < 10 ? '0' + hour : hour;
let minute = parseInt(times / 60 % 60);//分
minute = minute < 10 ? '0' + minute : minute;
let second = parseInt(times % 60);//秒
second = second < 10 ? '0' + second : second;
return day + '天' + hour + '时' + minute + '分' + second + '秒';
}
console.log(countDown('目标时间')); //注意书写格式 例 '2021-7-24 00:00:00'
后台显示出打印的剩余时间
