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Mohamed Boussaid
2,534 PointsAdding a class of highlight to a <p> element not working
Can you see where I am wrong? Thanks.
var list = document.getElementsByTagName('ul')[0];
list.addEventListener('click', function(e) {
if (e.target.tagName == 'BUTTON') {
let button = e.target.tagName;
let p = button.previousElementSibling;
p.className = 'highlight';
}
});
<!DOCTYPE html>
<html>
<head>
<title>JavaScript and the DOM</title>
</head>
<link rel="stylesheet" href="style.css" />
<body>
<section>
<h1>Making a Webpage Interactive</h1>
<p>Things to Learn</p>
<ul>
<li><p>Element Selection</p><button>Highlight</button></li>
<li><p>Events</p><button>Highlight</button></li>
<li><p>Event Listening</p><button>Highlight</button></li>
<li><p>DOM Traversal</p><button>Highlight</button></li>
</ul>
</section>
<script src="app.js"></script>
</body>
</html>
2 Answers
Rabin Gharti Magar
Front End Web Development Techdegree Graduate 20,928 PointsHey Mohamed Boussaid,
In your code, you don't have to create any new variables. You can target <p> element by using previousElementSibling when the button is clicked like this:
var list = document.getElementsByTagName('ul')[0];
list.addEventListener('click', function(e) {
if (e.target.tagName == 'BUTTON') {
e.target.previousElementSibling.className = "highlight";
}
});
Hope this helps!
Mohamed Boussaid
2,534 PointsAwesome!