Sometimes, we want to add weeks to a date using JavaScript.
In this article, we’ll look at how to add weeks to a date using JavaScript.
Add Weeks to a Date Using JavaScript
To add weeks to a date using JavaScript, we can use the getDate method to get the date of the month.
Then we can add the number of weeks multiplied by 7 and pass that to setDate .
For instance, we write:
const numWeeks = 2;
const dt = new Date(2021, 1, 1);
dt.setDate(dt.getDate() + numWeeks * 7);
console.log(dt);
to add 2 weeks to Feb 1, 2021.
We call setDate with dt.getDate() + numWeeks * 7 add 14 days to the date returned by dt.getDate .
setDate will automatically calculate the correct date no matter how the dates are added.
Therefore dt is:
Mon Feb 15 2021 00:00:00 GMT-0800 (Pacific Standard Time)
according to the console log.
Conclusion
To add weeks to a date using JavaScript, we can use the getDate method to get the date of the month.
Then we can add the number of weeks multiplied by 7 and pass that to setDate .
