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

Philipp Henk
Philipp Henk
12,494 Points
Posted by Philipp Henk
Philipp Henk
12,494 Points

Could need some help on this exercise

Apparently i do not fully understand how to solve the exercise of "Inside the jQuery each() method, use prepend() to add an '<input type="checkbox"/>' to the beginning of each list item. Use the this keyword, so the callback function doesn't need any arguments."

Would be awesome, if someone could review my code!

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 (index, event) {

  $(event.target).preprend('<input type="checkbox"/>');

});

1 Answer

Adam Pengh
Adam Pengh
29,881 Points
Adam Pengh
Adam Pengh
29,881 Points

The $('.favorite-things li') creates an object of elements, ie the 4 list items. Then, as you loop through the object using .each, $(this) references the current item in the loop. So, the code below is basically saying, select all of the list items, loop through them, and prepend the checkbox to the current list item.

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