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

Posted by Adlan Ilyasov
Adlan Ilyasov
2,476 Points

You didn't pass a function as the second agument to 'addEventListener'.

how do i pass a function to eventlistener?

app.js 
var warning = document.getElementById("warning");
var button = document.getElementById("makeItRed");
button.addEventListener('click');
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
231,269 Points
Steven Parker
Steven Parker
231,269 Points

After a comma to separate it from the first argument, you can either put the name of an existing function or you can create an anonymous function expression. The latter is a popular use of "arrow" functions.

There are examples of this in the video lesson just prior to the challenge.