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

Posted by arshia mohammadi
arshia mohammadi
7,657 Points

Why the background doesn't turn red in this code challenge??

Need your help!

app.js 
const warning = document.getElementById("warning");
let button = document.querySelector("#makeItRed");
button.addEventListener('click', () => {
    warning.style.backgroundcolor = '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>

2 Answers

Gabbie Metheny
Gabbie Metheny
33,778 Points
Gabbie Metheny
Gabbie Metheny
33,778 Points

In JavaScript, CSS properties need to be camelCased, so background-color will be backgroundColor. Hope that helps!

arshia mohammadi
arshia mohammadi
7,657 Points
arshia mohammadi
arshia mohammadi
7,657 Points

Thanks worked!