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 The Event Object

Code Not Working

I copied what the video said to do, and have spent a lot of time dissecting the video to see what went wrong, and everything looks the same... Please Help.

Here is my Code:

const toggleList = document.getElementById('toggleList'); const listDiv = document.querySelector('.list'); const descriptionInput = document.querySelector('input.description'); const descriptionP = document.querySelector('p.description'); const descriptionButton = document.querySelector('button.description'); const addItemInput = document.querySelector('input.addItemInput'); const addItemButton = document.querySelector('button.addItemButton'); const removeItemButton = document.querySelector('button.removeItemButton');

listDiv.addEventListener('mouseover', (event) => { if (event.target.tagName == 'LI') { event.target.textContent = event.target.textContent.toUpperCase(); });

listDiv.addEventListener('mouseout', (event) => { if (event.target.tagName == 'LI') { event.target.textContent = event.target.textContent.toLowerCase(); });

toggleList.addEventListener('click', () => {

if (listDiv.style.display == 'none') {
  toggleList.textContent = 'Hide list';
 listDiv.style.display = 'block';

} else { toggleList.textContent = 'Show List'; listDiv.style.display = 'none'; }
});

descriptionButton.addEventListener('click', () => { descriptionP.innerHTML = descriptionInput.value + ':'; descriptionInput.value = ''; });

addItemButton.addEventListener('click', () => { let ul = document.getElementsByTagName('ul')[0]; let li = document.createElement('li'); li.textContent = addItemInput.value; ul.appendChild(li); addItemInput.value = ''; });

removeItemButton.addEventListener('click', () => { let ul = document.getElementsByTagName('ul')[0]; let li = document.querySelector('li:last-child'); ul.removeChild(li); });

Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hey, try to add this } at the end of your code. I hope that helps.

Thanks Grigorji!

1 Answer

You are missing a closing bracket for each listDiv.addEventListener() function. You have one for the if statement but not the function.

listDiv.addEventListener('mouseover', (event) => {
  if (event.target.tagName == 'LI') {
    event.target.textContent = event.target.textContent.toUpperCase(); 
  }
} //missing
);

listDiv.addEventListener('mouseout', (event) => {
  if (event.target.tagName == 'LI') {
    event.target.textContent = event.target.textContent.toLowerCase(); 
  }
} //missing
);

Thanks so much, I don't now how I missed this.