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Increase a Date in JavaScript by One Week

When building tools that work with dates, you may want to provide a button that acts as a shortcut to increase a date by one week. Internally, your application still works with actual dates and you may want to calculate the date in one week.

This tutorial shows you how to increase a date in JavaScript by one week.

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Increase a Date in JavaScript by One Week

JavaScript’s global Date class provides dozens of methods to manipulate a date instance. Increasing a date instance by one week is basically a calculation of adding seven days to today:

const nextWeek = new Date()

// add 7 days to the current date
nextWeek.setDate(new Date().getDate() + 7)

console.log(nextWeek)  
// 2020-01-03T11:08:14.918Z

Starting from today, you may retrieve the current days in the month using the .getDate() method. You can then go ahead and add 7 more days to increase the days by one week.

Increase the days of a JavaScript date instance using the .setDate() method. The benefit provided by JavaScript: it automatically switches the month in case you’re exceeding the days in a month.

You may also be interested in the related tutorial showing how to retrieve tomorrow’s date in JavaScript.

That’s it! Enjoy dates and make it rock!

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Marcus Pöhls

Marcus is a fullstack JS developer. He’s passionate about the hapi framework for Node.js and loves to build web apps and APIs. Creator of Futureflix and the “learn hapi” learning path.

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