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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
Posted by 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
231,236 Points
Steven Parker
Steven Parker
231,236 Points

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

Joseph Spirito
Joseph Spirito
11,007 Points
Joseph Spirito
Joseph Spirito
11,007 Points

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