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 React by Example Building the Application Creating the Counter

Any reason not to just pass the function into the Counter props and not have to declare a variable on each render?

Like this:


1 Answer

It's because the the teacher wants to use the two constants to calculate the number of unconfirmed guests:

  const numberUnconfirmed = totalInvited - numberAttending;

He doesn't want to create a third function. It's personal preference. I like you way.