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 Object-Oriented JavaScript: Challenge Building Constructor Methods and Generating Objects Token Properties Solution

Why token need to be unique?

Why token need to be unique?

Félix Guérin Camilo Lucero

1 Answer

Steven Parker
Steven Parker
231,271 Points

It's each token ID that needs to be unique. And that is because it is used to find a specific token in the collection. If two of them had the same ID the code would not be able to tell which one you were referring to.

Also, HTML rules say all element IDs on the same page must be different.