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

Linda Gomes
Linda Gomes
3,584 Points
Posted by Linda Gomes
Linda Gomes
3,584 Points

On line 2 of app.js, select all links in the unordered list with the id of "gallery" and assign them to galleryLinks.

I don't understand why it doesn't work. It says "Was expecting 2 links not 3"

let navigationLinks = document.querySelectorAll('nav a'); let galleryLinks = document.querySelectorAll('#gallery'); let footerImages;

js/app.js 
let navigationLinks = document.querySelectorAll('nav a');
let galleryLinks = document.querySelectorAll('#gallery');
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>

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Hey Linda,

For Task 2, you are going to have to string together a couple of selectors. First you need to access the ID of gallery using getElementById(), and then string on the second one to select the links inside with getElementsByTagName(). So, one selects the ID and then because of chaining, the second one will select only the tags inside of the ID.

let galleryLinks = document.getElementById('gallery').getElementsByTagName('a');

Hope the helps. :) :dizzy:

Linda Gomes
Linda Gomes
3,584 Points
Linda Gomes
Linda Gomes
3,584 Points

Thank you so much! This DOM thing is very tricky... I'm finding it very hard to understand. But (very) slowly I think I'll get there.