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

Joseph Spirito
Joseph Spirito
11,007 Points

Why my background not turn red???

Simply put 3 step challenge.

  1. Assign the button to the button variable. (Check)
  2. Create a 'click' event listener and assign a blank function. (Check)
  3. Make the button turn the background color of the 'warning' div to red. ()

I'm not sure what I am doing wrong.

Please Help!

Thank you

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

1 Answer

Steven Parker
Steven Parker
215,958 Points

Your variable name is just "warning", not "document.warning".

Joseph Spirito
Joseph Spirito
11,007 Points

Steven, you have saved me once again! THANK YOU!