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4,681 PointsI am confused about how to add the "highlight" class to the previous sibling p tag. Any help?
var list = document.getElementsByTagName('ul')[0];
list.addEventListener('click', function(e) {
if (e.target.tagName == 'BUTTON') {
if(e.target.tagName == 'P'){
let prev = e.target.previousElementSibiling;
prev.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>
1 Answer
jb30
44,806 Points if (e.target.tagName == 'BUTTON') {
if(e.target.tagName == 'P'){
let prev = e.target.previousElementSibiling;
prev.className = "highlight";
}
}
If the tagName
of e.target
is 'BUTTON', then its tagName
is not 'P'. Try deleting if(e.target.tagName == 'P'){
and the corresponding }
and correcting the spelling of previousElementSibling
.