Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript and the DOM (Retiring) Making Changes to the DOM Styling Elements

Why is my button also disappearing on my page?

When I click the Hide List button my button also disappears and I'm not sure why. Am I missing something somewhere? As a result of this I am unable to re-show my list because my button disappears!

<!DOCTYPE html>
    <title>JavaScript and the DOM</title>
    <link rel="stylesheet" href="css/style.css">
    <h1 id="myHeading">JavaScript and the DOM</h1>
    <p>Making a web page interactive</p>    
    <div class="list">
    <button id="toggleList">Hide List</button>
    <p class="description">Things that are purple:</p>
    <input type="text" class="description">
    <button class="description">Change list description</button>
    <script src="app.js"></script>
const toggleList = document.getElementById('toggleList');
const listDiv = document.querySelector('.list');
const input = document.querySelector('input');
const p = document.querySelector('p.description');
const button = document.querySelector('button');

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';

button.addEventListener('click', () => {
    p.innerHTML = input.value + ':';

1 Answer

Your button is inside the div that you are hiding. Move it outside the div. This:

  <button id="toggleList">Hide list</button>
    <div class="list">

instead of this:

 <div class="list">
    <button id="toggleList">Hide List</button>

That worked, thank you!