📅 JavaScript Date Object

Last Updated: 26th October 2025

  • JavaScript provides the Date object to work with dates and times.
  • You can create, manipulate, and format dates using this object.

Hinglish Tip 🗣: Date object ko socho ek “calendar & clock machine” ke jaise — abhi ka time de sakta hai, future date bana sakte ho, aur differences bhi nikal sakte ho.

✏ Creating Date Objects

// Current date & time
let now = new Date();
console.log(now);

// Specific date
let birthday = new Date("2000-01-01");
console.log(birthday);

// Using year, month, day, hour, min, sec
let specific = new Date(2025, 9, 26, 22, 30, 0); // month is 0-indexed
console.log(specific);

Common Date Methods

  • getFullYear(): Returns the year as a four-digit number.
  • getMonth(): Returns the month as a zero-based number (0-11).
  • getDate(): Returns the day of the month as a number (1-31).
  • getDay(): Returns the day of the week as a number (0-6).
  • getHours(): Returns the hour as a number (0-23).
  • getMinutes(): Returns the minutes as a number (0-59).
  • getSeconds(): Returns the seconds as a number (0-59).
  • getMilliseconds(): Returns the milliseconds as a number (0-999).
  • getTime(): Returns the number of milliseconds since January 1, 1970, UTC.

Setting Date & Time

  • setFullYear(): Sets the year.
  • setMonth(): Sets the month (0-11).
  • setDate(): Sets the day of the month.
  • setHours(): Sets the hour (0-23).
  • setMinutes(): Sets the minutes (0-59).
  • setSeconds(): Sets the seconds (0-59).
  • setMilliseconds(): Sets the milliseconds (0-999).
let now = new Date();
now.setFullYear(2025);
console.log(now);

Formatting Dates

  • toDateString(): Returns a string representation of the date in the local time zone.
  • toTimeString(): Returns a string representation of the time in the local time zone.
  • toLocaleString(): Returns a localized string representation of the date.
  • toLocaleDateString(): Returns a localized string representation of the date without the time.
  • toLocaleTimeString(): Returns a localized string representation of the time without the date.
let now = new Date();
console.log(now.toDateString()); // Sat Oct 26 2025
console.log(now.toTimeString()); // 22:30:00 GMT+0530 (India Standard Time)
console.log(now.toLocaleDateString()); // 26/10/2025
console.log(now.toLocaleTimeString()); // 22:30:00
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