Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript DOM Scripting By Example Adding and Removing Names Using the submit Event

what is wrong with my code?

Alter the callback function to use the event object. Using the event object, ensure that the browser's default form submit behavior does not occur when the form is submitted.

what should i write?

app.js
const form = document.querySelector('form');
const submitButton = form.querySelector('[type=Submit]');
const input = form.querySelector('input');

  form.addEventListener('submit', () => {
   e.preventDefault();
});
index.html
<!DOCTYPE html>
<html>
<head>
  <title>Submit Event</title>
</head>
<body>
<form>
  <label>Name:</label>
  <input type="text" name="name">
  <input type="Submit" name="submit" value="Submit">
</form>
  <script src="app.js"></script>
</body>
</html>

2 Answers

Steven Parker
Steven Parker
231,271 Points

The challenge should have shown you this hint: "Bummer: The callback function has no event object parameter."

You called the right method, but you're referencing "e" without declaring it as a parameter of the callback:

  form.addEventListener('submit', e => {    // <-- add the parameter "e"
Steven Parker
Steven Parker
231,271 Points

ramy rahmiel — Glad to help. You can mark the question solved by choosing a "best answer".
And happy coding!

thank you:)