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JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Child Traversal

Ricky White
Ricky White
8,799 Points
Posted by Ricky White
Ricky White
8,799 Points

What did I miss?...

Question: For every paragraph element change the color to be blue. (Hint: remember, paragraphs contains a collection of elements, so you'll need to use a loop and access each element inside.)

Error message: Bummer: There was an error with your code: TypeError: 'undefined' is not an object (evaluating 'paragraphs[i].style')

I can't seem to get this working. What did I miss? The error seems to be with the paragraphs[i].style section of code. But when I use that line (5) in the chrome console, it works fine.

Any help would be appreciated.

app.js 
const section = document.querySelector('section');
let paragraphs = section.children;

for (let i = 0; paragraphs.length; i += 1) {
    paragraphs[i].style.color = 'blue';
}
index.html 
<!DOCTYPE html>
<html>
    <head>
        <title>Child Traversal</title>
    </head>
    <body>
        <section>
            <p>This is the first paragraph</p>
            <p>This is a slightly longer, second paragraph</p>
            <p>Shorter, last paragraph</p>
        </section>
        <footer>
            <p>&copy; 2016</p> 
        </footer>
        <script src="app.js"></script>
    </body>
</html>

1 Answer

Zachary Eckstein
Zachary Eckstein
9,901 Points

Looks like your for loop isn't initialized properly. The middle part should be something like: i < paragraphs.length

Ricky White
Ricky White
8,799 Points
Ricky White
Ricky White
8,799 Points

Thanks, man. Knew it would be something simple.

"Couldn't see the trees for the forest."