js_halloween_easteregg.js

let [ year, month, day ] = [2024, 9, 12]

let scaryDate = new Date()
scaryDate.setFullYear(year)
scaryDate.setMonth(month - 1) // set month input is zero based
scaryDate.setDate(day)

console.log(`🦇`, scaryDate, `🦇`)

// output: 
// 🦇 2024-10-12T05:36:21.947Z 🦇

// October?? let's take a look at the setMonth docs: (emojis added for effect)

/**
 * Sets the month value in the Date object using local time.
 * @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively.
 * @param date A numeric value representing the day of the month. 🎃🎃🎃 If this value is not supplied, the value from a call to the getDate method is used 🎃🎃🎃. 
 */


let goodDate = new Date()
goodDate.setFullYear(year)
goodDate.setMonth(month - 1, day) // provide the date as well, just as you would completely not expect.
goodDate.setDate(day)

console.log(`😅`, goodDate, `😅`)

// output:
// 😅 2024-09-12T06:36:21.947Z 😅