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

JavaScript Interactive Web Pages with JavaScript Traversing and Manipulating the DOM with JavaScript Traversing Elements

kevinthecoder
kevinthecoder
10,791 Points
Posted by kevinthecoder
kevinthecoder
10,791 Points

Can't pass challenge on children of Navigation

Alright, this one's got me stumped. I was actually able to follow the first two of the three sections in the course with no problem. This third section is really hard to understand/interpret. Anyway, can someone tell me why my code with .children is not working? My brain is starting to hurt..hahaha. Maybe I should take a break! :)

app.js 
//Select the naviagation
var navigation = document.getElementById("navigation");

//Select all listItems from the navigation
var listItems = document.getElementById.children("navigation");

//When a navigation link is pressed
var linkListener = function() {
  console.log("Listener is clicked!");
}

var bindEventsToLinks = function(listItem) {
  //Select the anchor
  var anchor = listItem;
  //Bind the linkListener to the anchor element (a) 
  anchor.onclick = linkListener;
}

for(var i = 0; i < listItems.length ; i++) {
    bindEventsToLinks(listItems[i]);
}
index.html 
<!DOCTYPE html>
<html>
<head></head>
<body>

<ul id="navigation">
  <li>
    <a href="#home">Home</a>
  </li>
  <li>
    <a href="#about">About</a>
  </li>
  <li>    
    <a href="#contact">Contact</a>
  </li>
</ul>

<p>A few of my favourite things:</p>
<ul>
  <li>
    Rain drops on roses
  </li>
  <li>
    Whiskers on kittens
  </li>
  <li>
    Brown paper packages wrapped up with string
  </li>
</ul>

<script src="app.js"></script>
</body>
</html>

2 Answers

Daniel Johnson
Daniel Johnson
104,132 Points
Daniel Johnson
Daniel Johnson
104,132 Points

Close, but it's easier than you're thinking. You would just use the children property.

var listItems = navigation.children;

And for the second task you would use the querySelector method.

var anchor = listItem.querySelector('a');

So it should look like this when you're done.

app.js 
//Select the naviagation
var navigation = document.getElementById("navigation");

//Select all listItems from the navigation
var listItems = navigation.children;

//When a navigation link is pressed
var linkListener = function() {
  console.log("Listener is clicked!");
}

var bindEventsToLinks = function(listItem) {
  //Select the anchor
  var anchor = listItem.querySelector('a');
  //Bind the linkListener to the anchor element (a) 
  anchor.onclick = linkListener;
}

for(var i = 0; i < listItems.length ; i++) {
    bindEventsToLinks(listItems[i]);
}
kevinthecoder
kevinthecoder
10,791 Points
kevinthecoder
kevinthecoder
10,791 Points

Thanks, Daniel! This stuff is getting a little tough. :) I appreciate your help.