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
Youssef Gerges
Front End Web Development Techdegree Student 7,980 Pointscode does not work
getting this error "Uncaught TypeError: Cannot set property 'textContent' of null at HTMLButtonElement.button.addEventListener" when i click the button.
<!DOCTYPE html>
<html>
<head>
<title>JavaScript and the DOM</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<h1 id="myHeading">JavaScript and the DOM</h1>
<p>Making a web page interactive</p>
<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>
<script src="app.js"></script>
</body> </html>
const input = document.querySelector('input'); const p = document.querySelector('p.description'); const button = document.querySelector('button');
button.addEventListener('click', () => { p.textContent = input.value + ':'; });
1 Answer
Steven Parker
231,269 PointsThere should be an equal-sign between the word "class" and the string value "description".
<button class"description"> <!-- original -->
<button class="description"> <!-- fixed -->
Youssef Gerges
Front End Web Development Techdegree Student 7,980 PointsYoussef Gerges
Front End Web Development Techdegree Student 7,980 Pointsthank you