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 jQuery Basics Working with jQuery Collections The .each() method

Pavlo Vasylkivskyi
Pavlo Vasylkivskyi
3,521 Points
Posted by Pavlo Vasylkivskyi
Pavlo Vasylkivskyi
3,521 Points

My code does not work. Why?

$('.favorite-things li').each(function() { const $checkbox = $('<input type="checkbox"/>'); $(this).prepend($checkbox); });

index.html 
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h2>My Favorite Things</h2>

    <ul class="favorite-things">
        <li>Kittens</li>
        <li>Rainbows</li>
        <li>Unicorns</li>
        <li>Sprinkles</li>
    </ul>

    <script
    src="jquery-3.2.1.min.js"></script>
    <script src="app.js"></script>
</body>
</html>
app.js 
$('.favorite-things li').each(function() {
 const $checkbox = $('<input type="checkbox"/>');
  $(this).prepend($checkbox);
});

1 Answer

Maciej Czuchnowski
Maciej Czuchnowski
36,441 Points
Maciej Czuchnowski
Maciej Czuchnowski
36,441 Points

Hey, Pavlo!

Make sure you take a look at documentation here: https://api.jquery.com/prepend/ You should pass '<input type="checkbox"/>' directly to .prepend(). No need to make a constant and it should just be a string, not a selector.