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

Posted by ihvaqnmzxb
ihvaqnmzxb
1,158 Points

Descendant selector isn't working in querySelectorAll

I don't understand why this selector does not grab the correct elements. In the console navigationLinks.length returns the value 3, it appears to be working on my server but not in the Treehouse app, Am I missing something here??

navigationLinks = document.querySelectorAll('nav li');

js/app.js 
let navigationLinks;
let galleryLinks;
let footerImages;

navigationLinks = document.querySelectorAll('nav li');
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>

3 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The challenge asks you to "select all links in the nav element". Links are represented by anchor ("a") elements, but the the code above targets list items ("li") instead.

But using the descendant selector is a good idea.

ihvaqnmzxb
ihvaqnmzxb
1,158 Points
ihvaqnmzxb
ihvaqnmzxb
1,158 Points

Got it, thank you! Knew it was something super simple, just need to read closer :/ navigationLinks = document.querySelectorAll('nav a');

Tim Marsh
Tim Marsh
7,463 Points
Tim Marsh
Tim Marsh
7,463 Points

Thank you for this clarification. Reading this a couple years later and it saved my headache. Haha.