JavaScript 格式化时间-将时间转换为 hh:mm:ss 格式

const timeFromDate = date => date.toTimeString().slice(0, 8);
let result1 = timeFromDate(new Date(2022, 8, 8, 12, 30, 0));  // 12:30:00
let result2 = timeFromDate(new Date());  // now time
console.log(result1);
console.log(result2);