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andres ponton
10,350 PointsI dont know how to solve this challenge
I dont understant how to approach this, what is the highlight property, this is what i have so far
var list = document.getElementsByTagName('ul')[0];
list.addEventListener('click', function(e) {
if (e.target.tagName == 'BUTTON') {
let p=e.target.parentNode;
let button=p.previousElementSibling;
button.idontknow(p);
}
});
<!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

Steven Parker
220,352 PointsThere's no "highlight" property, what the challenge wants you to do is "to add a class of highlight
". So "highlight" is just a literal class name.
Also, the paragraph is a peer element to the button, so you won't need to access a parent element to get to it.
Update: Your second try is close, but the paragraph they want you to change is the sibling of the button ("e.target") instead of the one that is a sibling of the "list".

andres ponton
10,350 Pointsthanks for your response, this is what ive got, but it doesnot work
var list = document.getElementsByTagName('ul')[0];
list.addEventListener('click', function(e){ if (e.target.tagName == 'BUTTON') { var p=list.previousElementSibling; p.className='highlight';
} });