Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables Working with Strings and Finding Help

Posted by Aldik 97
Aldik 97
2,983 Points

put something inside the () of toUpperCase()

what will happen when you put something inside the parenthesis of the .toUpperCase method? or what does the parenthesis meant to be? is it meant to put something inside it like in document.write()?

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

The parentheses are required any time you call (invoke) a method, even if no arguments are being passed. This particular method does not take any arguments, so if you put anything there it will be ignored.