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 JavaScript Foundations Objects Prototypes: Part 2

Joe Kelly
Joe Kelly
4,854 Points

Why does a constructor function name have to start with uppercase? Is it a name practice or does it have functionality?

In Javascript, why does a constructor function name have to start with uppercase? Is it a naming practice or does it have functionality so that if you don't start with an uppercase something won't work as it supposed to?

2 Answers

Chris Shaw
Chris Shaw
26,662 Points

Hi Joe,

Whenever you have a function that you're defining as a class it's best practice to use a capital letter as that is the common naming convention between languages and it's much more clear than what a lowercase letter is, that said it plays no part in how the code actually functions so you can call it anything you like.

Joe Kelly
Joe Kelly
4,854 Points

Thank you Chris for the clarification!