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

Posted by anns
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anns
Full Stack JavaScript Techdegree Student 10,874 Points

I dont understand why the solution doesnt work?

I dont understand why the solution below doesn't work?

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

app.js 
const section = document.querySelector('section');
let paragraphs = section.children;
for(i=0;i<paragraphs.length;i+=1){
  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>
Thomas Gauperaa
Thomas Gauperaa
3,584 Points

It works when I try it? Paragraphs are blue?

1 Answer

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

The challenge is validating your code using "strict" syntax rules, where implicit declarations are not allowed.

Explicitly declare your loop variable (with "var" or "let) to pass the challenge:

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