时间戳转换成时分秒

1.一般还是用于倒计时

var s = this.time;//转换时间（s转时分秒）let hour = parseInt(s / 3600); //小时let minutes = s - hour * 3600;let minute = parseInt(minutes / 60); // 分钟let second = minutes - minute * 60;if (hour < 10) {hour = '0' + hour}if (minute < 10) {minute = '0' + minute}if (second < 10) {second = '0' + second}var paytime = hour + ':' + minute + ':' + second;