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
R Ighodaro
Full Stack JavaScript Techdegree Student 5,306 PointsCan someone please remind me how to select the decedents of an element?
I'm using getElementsByTagName() and I want to get the decedents of all elements with the "nav" tag.
let navigationLinks = document.getElementsByTagName('nav').decendnet;
let galleryLinks;
let footerImages;
<!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>© 2016 Nick Pettit.</p>
</footer>
</div>
<script src="js/app.js"></script>
</body>
</html>
2 Answers
Michael Kobela
Full Stack JavaScript Techdegree Graduate 19,570 PointsWell with javascript first select a single element, your examples above returns an array so you would have to use [] for each item.
document.getElementById('abc');
Then using the element's properties like:
document.getElementById('abc').children; // gives all the children
document.getElementById('abc').firstChild; //gives the first child element
document.getElementById('abc').lastChild; //gives the last child element
Check out MDN for more examples: https://developer.mozilla.org/en-US/docs/Web/API/ParentNode/children
Michael Kobela
Full Stack JavaScript Techdegree Graduate 19,570 Pointslet navigationLinks = document.getElementsByTagName('nav');
returns an array. So:
navigationLinks.children;
will not work. You need to use navigationLinks[0].children and so on,
R Ighodaro
Full Stack JavaScript Techdegree Student 5,306 PointsR Ighodaro
Full Stack JavaScript Techdegree Student 5,306 PointsThanks, but I'm using the 'getElementByTagName()' function as that's what the exercise wants. the '.children' doesn't seem to work for that.