https://blog.canopas.com/date-and-time-utilities-in-javascript-1f1330fd206e - get-year-month-day

get-year-month-day-time.js

/** year **/

// Current year : 2022
console.log("Current year : ", new Date().getFullYear())

// Given date year : 2018
console.log("Given date year : ", new Date("2018-03-25").getFullYear())

/** 
   month 
   getMonth() starts with 0, it will returns currentMonth - 1 number (11 - 1 = 10).
**/

// Current month : 10 
console.log("Current month : ", new Date().getMonth())

// Given date month : 2
console.log("Given date month : ", new Date("2018-03-25").getMonth())

// Full month name : November
// For short name, can use 'short'
console.log("Full month name : ", cDate.toLocaleString('default', { month: 'long' }))

/** date **/

// Current date : 7
console.log("Current date : ", new Date().getDate())

// Given date's date : 25
console.log("Given date's date : ", new Date("2018-03-25").getDate())

/** weekday **/

// Today's weekday : 1 (monday)
console.log("Today's weekday : ", new Date().getDay())

// Given date weekday : 0 (sunday)
console.log("Given date's date : ", new Date("2018-03-25").getDay())

/** millis **/

// Current time in millis : 1667813042954
console.log("Current time in millis : ", Date.now())