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Start your free trialYosif Qassim
6,367 Pointsdown button is not working
why the button is not working ?????
const input = document.querySelector('input');
const p = document.querySelector('p.d');
const button = document.getElementsByClassName('down');
const listUl = listDiv.querySelector('ul');
listUl.addEventListener('click', (event) => {
if (event.target.className == 'down') {
let li = event.target.parentNode;
let nextLi = li.nextElementSibling;
let ul = li.parentNode;
if (nextLi) {
ul.insertBefore( nextLi , li);
}
}
});
<!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="d">Things that are purple:</p>
<ul>
<li>grapes
<button class="down">Down</button>
</li>
<li>amethyst
<button class="down">Down</button>
</li>
<li>lavender
<button class="down"> Down</button>
</li>
<li>plums
<button class="down">Down</button>
</li>
</ul>
<script src="app.js"></script>
</body>
</html>
1 Answer
Robert Anthony
19,952 PointsIn your code you have this line:
const listUl = listDiv.querySelector('ul');
But you don't set listDiv to a value or element before this line. This means that ListUI is undefined and when you set an event listener to it, nothing will happen.
Yosif Qassim
6,367 PointsYosif Qassim
6,367 Pointsthanks!