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 Adding an Event Listener

In the button click handler apply the background color of "red" to the warning div

i cant figure this out,my brain is still digesting the concepts

const warning = document.getElementById("warning");
let button = document.getElementById("makeItRed");
<!DOCTYPE html>
        <title>Adding an Event Listener</title>
    <link rel="stylesheet" href="style.css" />
        <div id="warning">
            Warning: My background should be red!
        <button id="makeItRed">Make It Red!</button>
        <script src="app.js"></script>

3 Answers

Steven Parker
Steven Parker
229,005 Points

You won't need to create another handler. Just assign the color to the "warning" element's "style.backgroundColor" property.

Thanks Steven,how would you write this....its not working when i write this warning.style.backgroundColor = "red";

Steven Parker
Steven Parker
229,005 Points

That statement is correct. I pasted it into the challenge and it passed. Try again, and check that it correctly placed in the body of the handler function.

eslam said
eslam said
Courses Plus Student 6,734 Points

are you sure your code looks like this ?

  button.addEventListener('click', ()=>{
      warning.style.backgroundColor = 'red';

thank you,Steven and Eslam.....it worked