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) Making Changes to the DOM Appending Nodes

Paul Israel
seal-mask
.a{fill-rule:evenodd;}techdegree
Paul Israel
Full Stack JavaScript Techdegree Student 2,413 Points

None of buttons is working, please what am i doing wrong?

My Javascript File

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');

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 + ':';
});

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

My HTML File

<!DOCTYPE html>
<html>
  <head>
    <title>JavaScript and the DOM</title>
    <link rel="stylesheet" href="style.css">
  </head>
  <body>
    <h1 id="myHeading">JavaScript and the DOM</h1>
    <p>Making a web page interactive</p>
    <button id='toggleList'>Hide List</button>
    <div class="list">
      <p class='description'>Things that are purple:</p>
<input type='text' class='description'>
<button class="description"> Change List Description</button>
<ul>
  <li>grapes</li>
  <li>amethyst</li>
  <li>lavender</li>
  <li>plums</li>
</ul>

<input type='text' class='addItemInput'>
<button class='addItemButton'>Add Item</button>
  </div>
  </body>
  <script src="script.js"></script>
</html>

1 Answer

Your code is good except for one very minor error on this line:

let ul = document.getElementsByTagName('ul')[0],

You have a comma at the end instead of a semi-colon. Fixing that error should resolve your issue.