/**
* 倒计时
* @param {string} 剩余秒数
* @param {function} 回调函数
*/
countDown(times,callback){
let timer = null;
timer = setInterval(() => {
if(times > 0){
let day = Math.floor(times / (60 * 60 * 24));
let hour = Math.floor(times / (60 * 60)) - (day * 24);
let minute = Math.floor(times / 60) - (day * 24 * 60) - (hour * 60);
let second = Math.floor(times) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);
day = `${day < 10 ? '0' : ''}${day}`;
hour = `${hour < 10 ? '0' : ''}${hour}`;
minute = `${minute < 10 ? '0' : ''}${minute}`;
second = `${second < 10 ? '0' : ''}${second}`;
callback(`${minute}:${second}`)
times--;
}else{
clearInterval(timer);
callback(false)
}
}, 1000);
if (times <= 0) {
clearInterval(timer);
callback(false)
}
}
调用方法
countDown(endTime,res => {
if (res) {
console.log(res) // 15:00
}else{
console.log(res) //倒计时结束
}
})
