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

Martin Coutts
Martin Coutts
18,154 Points

Code keeps crashing

Hi

Bit stuck here, I have the first part of the challenge done but my code keeps crashing on the second part. I know that means it isn't quite correct but not sure what changes I need to make. I think it is due to using paragraphs[i]. Not sure whether to create a function first and then use it in the loop.

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

for (let i = 0; i < paragraphs.length; i += 0){
  paragraphs[i].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

Hey Martin, looks like you have an infinite loop issue here.

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

Since you're incrementing by 0, variable i never reaches the paragraphs.length value.

This can be fixed by either using i += 1 or i++ as the increment for your for loop.

Martin Coutts
Martin Coutts
18,154 Points

Thanks Justin

Knew it would be something super obvious but not that obvious. Sometimes takes a second set of eyes I guess haha. Thanks again.