如何使用JavaScript获取日期

const currentDate = new Date();

const year = currentDate.getFullYear();
const month = currentDate.getMonth() + 1; // 月份从0开始，所以需要加1
const day = currentDate.getDate();

const hours = currentDate.getHours();
const minutes = currentDate.getMinutes();
const seconds = currentDate.getSeconds();

const weekday = currentDate.getDay();

const milliseconds = currentDate.getMilliseconds();

const formattedDate = currentDate.toLocaleDateString();
const formattedTime = currentDate.toLocaleTimeString();

const timestamp = currentDate.getTime();

const dateString = "2022-01-01";
const dateFromString = new Date(dateString);

const timestamp = 1641027200000; // 2022-01-01 00:00:00 UTC
const dateFromTimestamp = new Date(timestamp);