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

skylar stanley
PLUS
skylar stanley
Courses Plus Student 5,870 Points

not understanding what i am doing incorrectly

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.)

app.js
const section = document.querySelector('section');
let paragraphs = section.children;
for (let i = 0; i < paragraphs.length; i += 1) {
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>

1 Answer

i ++

is the equivalent of

i = i + 1;

also you are only changing the paragraphs. no need for backgroundColor

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

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