Get last week's Date using JavaScript

# Get last week's Date using JavaScript

To get last week's date, use the Date() constructor to create a new date, passing it the year, month and day of the month - 7 to get the date of a week ago.

Copied!
function getLastWeeksDate() {
  const now = new Date();

  return new Date(
    now.getFullYear(),
    now.getMonth(),
    now.getDate() - 7,
  );
}

// 👇️ Wed Jul 19 2023 00:00:00
console.log(getLastWeeksDate());

// 👇️ Wed Jul 26 2023 10:46:35
console.log(new Date());

We used the following 3 Date related methods:

• Date.getFullYear() method - returns a four-digit number representing the year that corresponds to a date.

• Date.getMonth() - returns an integer between 0 (January) and 11 (December) and represents the month for a given date. Yes, unfortunately, the getMonth method is off by 1.

• Date.getDate() - returns an integer between 1 and 31 representing the day of the month for a specific date.

By subtracting 7 days from the current date, we get last week's date.

# Get last week's Date preserving the time

If you want to preserve the time, you can convert 1 week to milliseconds and subtract the result from the milliseconds of the current date.

Copied!
function getLastWeeksDate() {
  const now = new Date();

  return new Date(now.getTime() - 7 * 24 * 60 * 60 * 1000);
}

// 👇️ Wed Jul 19 2023 10:47:53
console.log(getLastWeeksDate());

// 👇️ Wed Jul 26 2023 10:47:53
console.log(new Date());

The getTime() method returns the number of milliseconds since the Unix epoch for the specific Date.

You can also take a Date object as a parameter in the function to get the date of the previous week for any Date.

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

• Get First and Last Day of the current Week in JavaScript
• How to get the Day of the Week in JavaScript
• Check if a Date is during the Weekend using JavaScript