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 Array Iteration Methods Combining Array Methods Working with Objects in Arrays

Emil Lau
Emil Lau
6,233 Points

userObject is not defined

I've copied and paste the reduce method in the video.

const userObject= users.reduce((userObject, user) =>{ usersObject[user.name]=user.age; return usersObject; },{}); But my browser end up with the error "userObject is not defined".

It happens even if I change the name to something else.

1 Answer

Nastaran Moghadasi
seal-mask
.a{fill-rule:evenodd;}techdegree
Nastaran Moghadasi
Full Stack JavaScript Techdegree Student 1,416 Points

Hi Emil!

Maybe it's because:

You are using usersObject instead of userObject. Try this code out:

const userObject = users.reduce((userObject, user) => {
  userObject[user.name] = user.age;
  return userObject;
}, {});

I hope it works!