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JavaScript JavaScript and the DOM Getting a Handle on the DOM Return Elements Using CSS Selectors

Posted by Kennedy Malonga
Kennedy Malonga
18,790 Points

First, select all <a> elements inside the <nav> element and assign them to the variable navigationLinks. (HINT: Use a d

im struggling

app.js 
let navigationLinks = document.quarySelector('a');
let galleryLinks;
let footerImages;
index.html 
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Treehouse Student | 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>Treehouse Student</h1>
        <h2>Designer</h2>
      </a>
      <nav>
        <ul>
          <li><a href="#" class="selected">Work</a></li>
          <li><a href="#">About</a></li>
          <li><a href="#">Contact</a></li>
        </ul>
      </nav>
    </header>
    <div id="wrapper">
      <section>
        <ul id="gallery">
          <li>
            <a href="#">
              <img src="img/numbers-01.jpg" alt="The number 1 painted with colors and textures.">
              <p>Experimentation with color and texture.</p>
            </a>
          </li>
          <li>
            <a href="#">
              <img src="img/numbers-02.jpg" alt="The number 2 painted with various colors blended together.">
              <p>Playing with blending modes in Photoshop.</p>
            </a>
          </li>
        </ul>
      </section>
      <footer>
        <a href="https://twitter.com/treehouse"><img src="img/twitter-wrap.png" alt="Twitter Logo" class="social-icon"></a>
        <a href="https://www.facebook.com/TeamTreehouse"><img src="img/facebook-wrap.png" alt="Facebook Logo" class="social-icon"></a>
        <p>&copy; Treehouse Student.</p>
      </footer>
    </div>
    <script src="app.js"></script>
  </body>
</html>

1 Answer

jb30
jb30
44,807 Points
jb30
jb30
44,807 Points

document.querySelector('a'), spelled with an e, would give you the first element with an <a> tag in your html. To select all the elements with an <a> tag, you could do document.querySelectorAll('a').

The challenge wants you to select only the <a> elements in the <nav> element, and recommends using a descendant selector. To use a descendant selector, you use two tag names and separate them by a space. The left tag name refers to the parent element and the right tag name refers to the child element. To specify <a> elements within your <nav> element, it would be nav a.

You can replace the 'a' in document.querySelectorAll('a') with 'nav a' to select all of the <a> elements in the <nav> elements, and exclude any <a> elements that are not children of a <nav> element.