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How to add or subtract dates with JavaScript?

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Sometimes, we want to add or subtract dates with JavaScript.

In this article, we’ll look at how to add or subtract dates with JavaScript.

How to add or subtract dates with JavaScript?

To add or subtract dates with JavaScript, we can add or subtract them directly.

For instance, we write

const date1 = new Date(2022, 02, 18);
const date2 = new Date(2022, 02, 20);

const msDiff = date2 - date1;

to create a Date objects date1 and date2.

And then we subtract date2 by date1 to get the number of milliseconds difference between them.

date1 and date2 are automatically converted to timestamps before we do the subtraction.

Conclusion

To add or subtract dates with JavaScript, we can add or subtract them directly.

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

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