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

Posted by Nas Jones
Nas Jones
7,849 Points

I don't see what im doing wrong? the error was cannot read property 1 of null

The error was cannot read property 1 of null

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

for (let 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; 2019</p> 
        </footer>
        <script src="app.js"></script>
    </body>
</html>

1 Answer

Gergely Bocz
Gergely Bocz
14,244 Points
Gergely Bocz
Gergely Bocz
14,244 Points

Hi Nas Jones!

You are just missing the index for the paragraphs items.

Your code should look like this:

var section = document.querySelector('section');
var paragraphs = section.children;

for (let i = 0; i < paragraphs.length; i+= 1) {
paragraphs[i].style.color = 'blue';
}
Nas Jones
Nas Jones
7,849 Points

That fixed it thank you for the help!