Bummer! You must be logged in to access this page.

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 DOM Scripting By Example Adding and Removing Names Practice with Function Scope

can anyone help me m'm lost...

what shell i do i don't understand ...

app.js
const redButton = document.getElementById('redButton');
const blueButton = document.getElementById('blueButton');

redButton.addEventListener('click', (e) => {
  const colorSquare = document.getElementById('colorDiv');
  colorSquare.style.backgroundColor = 'red';
});

blueButton.addEventListener('click', (e) => {
  colorSquare.style.backgroundColor = 'blue';
})
style.css
div {
  height: 50px;
  float: left;
  padding-top: 40px;
  padding-left: 20px;

}

#colorDiv {
  padding: 0;
  width: 100px;
  height: 100px;
  background-color: gray;
}

button {
  height: 30px;
  border-radius: 10px;
}
#redButton {
  background-color: #ff5959;
  border-color: red;
}

#blueButton {
  background-color: lightblue;
  border-color: #7C9EFC;
}

1 Answer

The colorSquare variable you defined is in the redButton onClick listener which is limiting its scope. Define it outside. So, that blueButton onClick listener can access that.