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![Brandon Robertson](https://uploads.teamtreehouse.com/production/profile-photos/7004532/micro_IMG_0536-60.jpg)
Brandon Robertson
2,215 Pointsevent handler rvalue
I don't understand what I've done wrong here :/
var warning = document.getElementById("warning");
var button = document.querySelector('#makeItRed');
button.addEventListener('click', () => {
warning.style.background-color = 'red'
});
<!DOCTYPE html>
<html>
<head>
<title>Adding an Event Listener</title>
</head>
<link rel="stylesheet" href="style.css" />
<body>
<div id="warning">
Warning: My background should be red!
</div>
<button id="makeItRed">Make It Red!</button>
<script src="app.js"></script>
</body>
</html>
1 Answer
![KRIS NIKOLAISEN](https://secure.gravatar.com/avatar/65d74a723997b41a80d2d909c6e06960?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
KRIS NIKOLAISEN
54,969 Pointsbackground-color works in CSS. In JavaScript it is backgroundColor