← Back toFront-end tips

Wrap arrow function body in parentheses

Written byPhuoc Nguyen

Created

22 Feb, 2021

Last updated

28 Mar, 2023

Tags

JavaScript

Contributors

If the inline arrow function consists of the `<`, `<=`, `>` or `>=` operator, it is advised to wrap the function body in parentheses.

Looking at the two versions below, it is easy for the first variant to cause a misleading.

// Bad
const compareToZero = (a) => a <= 0 ? 0 : a;

// Good
const compareToZero = (a) => (a <= 0 ? 0 : a);

If you found this post helpful, please consider giving the repository a star on GitHub or sharing the post on your favorite social networks 😍. Your support would mean a lot to me!

Questions? 🙋

Do you have any questions about front-end development? If so, feel free to create a new issue on GitHub using the button below. I'm happy to help with any topic you'd like to learn more about, even beyond what's covered in this post.

While I have a long list of upcoming topics, I'm always eager to prioritize your questions and ideas for future content. Let's learn and grow together! Sharing knowledge is the best way to elevate ourselves 🥷.

Ask me questions

Newsletter 🔔

If you're into front-end technologies and you want to see more of the content I'm creating, then you might want to consider subscribing to my newsletter.

By subscribing, you'll be the first to know about new articles, products, and exclusive promotions.

Don't worry, I won't spam you. And if you ever change your mind, you can unsubscribe at any time.

Phước Nguyễn

Wrap arrow function body in parentheses

Questions? 🙋

Recent posts ⚡

Newsletter 🔔