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JavaScript Interacting with the DOM Responding to Events Adding an Event Listener

Sherrie Jeffers
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.a{fill-rule:evenodd;}techdegree
Sherrie Jeffers
Front End Web Development Techdegree Student 7,542 Points

Idk what I'm doing wrong

can someone please look at this and tell me what I'm doing wrong because I have no idea.

app.js
var warning = document.getElementById("warning");
var button = document.getElementById('makeItRed');
button.addEventListener('click', ()=>{
  document.getElementByID('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
218,692 Points

You have a spelling issue with "getElementByID" (capital "D") instead of "getElementById".

But you also don't need to call that function again, since the first line of code already does that and assigns the result to the variable warning.