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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Adding an Event Listener

Brandon Robertson
Brandon Robertson
2,148 Points

event handler rvalue

I don't understand what I've done wrong here :/

app.js
var warning = document.getElementById("warning");
var button = document.querySelector('#makeItRed');

button.addEventListener('click', () => {
  warning.style.background-color = 'red'
});
index.html
<!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

background-color works in CSS. In JavaScript it is backgroundColor