Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM Practice Selecting Elements

James Thompson
James Thompson
2,475 Points
Posted by James Thompson
James Thompson
2,475 Points

How do I get all three links selected for the challenge task with descendants selectors.

If I use the info in my code I get the message " The wrong Links or elements were selected. Be sure to select all links inside '<nav>'"

I tried to change it up using let navigationLinks = document.querySelectorAll('nav ul') and let navigationLinks = document.querySelectorAll('header nav ul'); but I get the message only 1 of the links was selected.

js/app.js 
let navigationLinks = document.querySelectorAll('nav li');
let galleryLinks;
let footerImages;
index.html 
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Nick Pettit | Designer</title>
    <link rel="stylesheet" href="css/normalize.css">
    <link href='http://fonts.googleapis.com/css?family=Changa+One|Open+Sans:400italic,700italic,400,700,800' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" href="css/main.css">
    <link rel="stylesheet" href="css/responsive.css">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
  </head>
  <body>
    <header>
      <a href="index.html" id="logo">
        <h1>Nick Pettit</h1>
        <h2>Designer</h2>
      </a>
      <nav>
        <ul>
          <li><a href="index.html" class="selected">Portfolio</a></li>
          <li><a href="about.html">About</a></li>
          <li><a href="contact.html">Contact</a></li>
        </ul>
      </nav>
    </header>
    <div id="wrapper">
      <section>
        <ul id="gallery">
          <li>
            <a href="img/numbers-01.jpg">
              <img src="img/numbers-01.jpg" alt="">
              <p>Experimentation with color and texture.</p>
            </a>
          </li>
          <li>
            <a href="img/numbers-02.jpg">
              <img src="img/numbers-02.jpg" alt="">
              <p>Playing with blending modes in Photoshop.</p>
            </a>
          </li>
        </ul>
      </section>
      <footer>
        <a href="http://twitter.com/nickrp"><img src="img/twitter-wrap.png" alt="Twitter Logo" class="social-icon"></a>
        <a href="http://facebook.com/nickpettit"><img src="img/facebook-wrap.png" alt="Facebook Logo" class="social-icon"></a>
        <p>&copy; 2016 Nick Pettit.</p>
      </footer>
    </div>
  <script src="js/app.js"></script>
  </body>
</html>

2 Answers

Cameron Childres
Cameron Childres
11,820 Points
Cameron Childres
Cameron Childres
11,820 Points

quereySelectorAll() makes use of CSS selectors, so you may want to look at the CSS Selector documentation to figure out how to use it.

A period at the start of a CSS selector means it's selecting a class. When selecting an element you do not use a period.

When you used the string 'nav li' you selected all <li> elements that descended from <nav> elements. Since you need to select <a> elements instead of <li>, you would use 'nav a'.

Cameron Childres
Cameron Childres
11,820 Points
Cameron Childres
Cameron Childres
11,820 Points

Hi James,

Your selector is currently targeting all list item elements that are descendants of nav elements. Even though the only contents of the list items are the links they are not the same thing. Try targeting anchor elements instead.

James Thompson
James Thompson
2,475 Points
James Thompson
James Thompson
2,475 Points

I am still stuck on trying to understand anchor elements and how to use them.

I am looking at https://developer.mozilla.org/en-US/docs/Web/API/Document_object_model/Locating_DOM_elements_using_selectors

Here is what I tried to use: let navigationLinks = document.querySelectorAll("a.nav li");

I did not change anything else in the code but it gives me the message

The wrong links or elements were selected. Be sure to select all links inside '<nav>'.