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

tomd
tomd
16,701 Points

The challange is correct but it wont let me pass?!

Task one - Select all the child P elements store them in 'paragraphs'. Task two - loop through all P elements and give them a background of blue.

Thats exactly what i've done, and it works but it wont pass....

This is my code

<!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>
const section = document.querySelector('section');
let paragraphs = section.children;

for(i = 0; i < paragraphs.length; i += 1) {
  paragraphs[i].style.backgroundColor = 'blue';
}
app.js
const section = document.querySelector('section');
let paragraphs = section.children;

for(i = 0; i < paragraphs.length; i += 1) {
  paragraphs[i].style.backgroundColor = '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>

3 Answers

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! The challenge absolutely does want you to use children but there are still two problems. This challenge is run using "strict" mode which means that the variable i in your for loop will need to be declared.

for(let i = 0; i < paragraphs.length; i += 1)

Secondly, the challenge is asking you to change the color property. This indicates the color of the text, but you're changing the background color.

paragraphs[i].style.color = 'blue';

Hope this helps! :sparkles:

tomd
tomd
16,701 Points

Wow how did i not notice those two things haha. Thank you

It may be that the challenge does NOT want you to use children but to use the querySelectorAll. I had a similar problem, what I did worked but it wasn't the way they wanted it to be done.

tomd
tomd
16,701 Points

I tried it that way to begin with, it wanted me to use children instead. Its the second task that doesn't want to pass for some reason. Thanks anyway.

Jesus, i was changing the background color as well, i have no idea why..

tomd
tomd
16,701 Points

haha a moment of madness for both of us