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!

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 Callback Functions in JavaScript Callbacks and the DOM Using Callbacks on Text Inputs

Alex Hort-Francis
Alex Hort-Francis
17,065 Points

My solution to the challenge at the end of the video

function addHighlighting(element) {
  element.addEventListener('focus', event => {
    event.target.className = 'highlight';
  element.addEventListener('blur', event => {
     event.target.className = '';


Seems to work as well!