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

Jakub Vintera
PLUS
Jakub Vintera
Courses Plus Student 8,362 Points
Posted by Jakub Vintera
Jakub Vintera
Courses Plus Student 8,362 Points

Can you help me understand where I do a mistake?

It doesn't work, but probably I don't understand well :-/

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

//Select all listItems from the navigation
var listItems = navigation.querySelector("a[href=#home]");

//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>

3 Answers

Salman Akram
Salman Akram
Courses Plus Student 40,065 Points

Hi Jakub,

It should have "children" from the navigation for the listItems.

Hint:

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

Here's our instructor explained about children @ 6:50

More detail - https://developer.mozilla.org/en-US/docs/Web/API/ParentNode/children

;)

Jakub Vintera
PLUS
Jakub Vintera
Courses Plus Student 8,362 Points
Jakub Vintera
Jakub Vintera
Courses Plus Student 8,362 Points

I have to : Take a look around the html and js files. Line 5 of app.js is incorrect. listItems should be the children of the navigation unordered list. Fix it.