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

Shehan Dissanayake
Shehan Dissanayake
19,119 Points

Inside the jQuery each() method, use prepend() to add an '<input type="checkbox"/>' to the beginning of each list item.

Why is this code wrong?

$('.favorite-things li').each(function() {

$(this).prepend($('<input type="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() {

 $(this).prepend($('<input type="checkbox"/>'));
});

2 Answers

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,850 Points

Hey Shehan,

You're prepending a jQuery object, when you should just be prepending a string.

Hey Clayton, I tried either with a string or as a jQuery object, none of them works:

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

or

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

Can you help me figure out what's the problem here?

I apologize but I still don't understand the answer. I'm still stuck on this challenge. Ugh. :-(

Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,850 Points

Hey Yiran,

Your first code snippet is close, but has one small error; you have a period after prepend and before it's invocation.