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

Octavia Kelly
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Octavia Kelly
Front End Web Development Techdegree Student 3,556 Points
Posted by Octavia Kelly
.a{fill-rule:evenodd;}techdegree
Octavia Kelly
Front End Web Development Techdegree Student 3,556 Points

On line 3 of app.js, select all images in the footer element and assign them to footerImages.

I'm rather confused as to why, in task 2, you use a # in front of gallery, but in tasks 1 and 3, you don't use a # in front of nav and footer respectively. Is this because you're referring to an "id" in task 2, whereas in the other two tasks, you're referring to tag names? Thanks very much for help on this!

js/app.js 
let navigationLinks = document.querySelectorAll("nav a");
let galleryLinks = document.querySelectorAll("#gallery a");
let footerImages = document.querySelectorAll("footer img");
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

silvercoder
silvercoder
11,113 Points

I'm rather confused as to why, in task 2, you use a # in front of gallery, but in tasks 1 and 3, you don't use a # in front of >nav and footer respectively. Is this because you're referring to an "id" in task 2, whereas in the other two tasks, you're >referring to tag names? Thanks very much for help on this!

It's because gallery is an id (id="gallery") and you use the # selector to select an Id.

Check out:

https://www.w3schools.com/cssref/css_selectors.asp

Hope this helps.