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

Gerry K
Gerry K
5,877 Points
Posted by Gerry K
Gerry K
5,877 Points

Task 1 no longer responding

The code works when I put in into a worksheet live, but for some reason I keep getting this error when I attempt to submit.

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

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

0yzh 󠀠
0yzh 󠀠
17,276 Points
0yzh 󠀠
0yzh 󠀠
17,276 Points

Hey Gerry,

Looks like the problem is that you aren't iterating through the 'paragraphs' collection properly. You are currently trying to apply 'style.color = blue' to the entire 'paragraphs' HTML collection on each iteration instead of each item in the collection.

Change your code to iterate through each item instead:

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

You also want to avoid creating global variables when your loop runs. Use 'let' instead of declaring 'i' as a global:

for (let i = 0; i < paragraphs.length; i +=1) {
  paragraphs[i].style.color = 'blue';
}

Hope this helps