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 and the DOM (Retiring) Responding to User Interaction Listening for Events with addEventListener()

console is throwing error:

The console is throwing the error: Uncaught TypeError: listItems.addEventListener is not a function at app.js:12 my workspace is https://w.trhou.se/7ijapmkqmj

1 Answer

Simon Coates
Simon Coates
8,377 Points

you have

  listItems.addEventListener('mouseout', () => {

in one location that you should have

  listItems[i].addEventListener('mouseout', () => {

Okay, thanks