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

Devjyoti Ghosh
Devjyoti Ghosh
2,422 Points
Posted by Devjyoti Ghosh
Devjyoti Ghosh
2,422 Points

Challenge Task problem Javascript

On task it says "On line 2 of app.js, get all the paragraph elements within section and assign them to the paragraphs variable."

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

It shows me this error Bummer! You didn't use the children property on the section element. I am not sure what I am doing wrong.

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

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

Well, the "Bummer" message hint tells you what they want to see, you can do it that way and pass.

But I'd recommend that you also report this as a bug to Support, as your solution should work just as well.

Devjyoti Ghosh
Devjyoti Ghosh
2,422 Points
Devjyoti Ghosh
Devjyoti Ghosh
2,422 Points

Yeah Steven i got that what I am not sure on is how would i use the section's children property to select the p tags.

edit: I was able to pass the challenge by let paragraphs = section.children; which is not supposed to be the answer since the question is asking me to select all the paragraph elements in the section tag whereas the code selects all the dom elements under the section tag along with paragraph elements.

Am I wrong in understanding the concept?

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

You're right, but you're overlooking that fact that all the children of that section are paragraph elements. You can see this in the index.html file (tab).

But your original method would actually be a better choice if you wanted to make sure that only paragraphs are selected even if future HTML changes added other elements to the section.