Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript Introducing ES2015 Objects and New Collection Types Map

What in the world is going on?!

You introduced us so much information the last videos which you don't fully explain and now I see this

if (clasroom.has(stevenS)) console.log('example');

Where are the curly braces ? {}

1 Answer

Steven Parker
Steven Parker
216,863 Points

Curly braces are not needed for a single statement.

They are often used anyway as a "best practice" to help insure the code is easy to read, but technically they are not needed when the conditional is controlling only one statement.

This is a fact of traditional JavsScript, nothing new for ES2015.

Thank you :)