Sometimes, we want to get last week’s date with JavaScript.

In this article, we’ll look at how to get last week’s date with JavaScript.

How to get last week’s date with JavaScript?

To get last week’s date with JavaScript, we can get the timestamp of the original date and subtract 7 * 24 * 60 * 60 * 1000 from it.

For instance, we write:

const firstDay = new Date(2022, 1, 2)
const previousWeek = new Date(firstDay.getTime() - 7 * 24 * 60 * 60 * 1000);
console.log(previousWeek)

to create the firstDay date.

Then we get the timestamp of firstDay in milliseconds with getTime.

And then we subtract 7 days from firstDay in milliseconds and create a new Date instance from the returned timestamp.

Therefore, previousWeek is Wed Jan 26 2022 00:00:00 GMT-0800 (Pacific Standard Time).

Conclusion

To get last week’s date with JavaScript, we can get the timestamp of the original date and subtract 7 * 24 * 60 * 60 * 1000 from it.