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 JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Adding Data to Arrays

Matthew Lehman
Matthew Lehman
5,282 Points
Posted by Matthew Lehman
Matthew Lehman
5,282 Points

my elements are not showing up on my array. May someone please help me

my elements are not showing up on my array.

https://w.trhou.se/rdpmv78sr0

2 Answers

Bobby Verlaan
Bobby Verlaan
29,538 Points
Bobby Verlaan
Bobby Verlaan
29,538 Points

Hi Matthew,

You have a typo in your index.html which makes the js scripts were never loaded. Instead of <scipt></scipt> it should be <script></script>. After adding the r to the script tags I tested your code and it worked just fine. Good job!

<script src="js/helpers.js"></script> <!-- added the r to the script tag //-->
<script src="js/playlist.js"></script> <!-- added the r to the script tag //-->
Matthew Lehman
Matthew Lehman
5,282 Points
Matthew Lehman
Matthew Lehman
5,282 Points

Thanks alot Bobby

I just noticed that error I did right after I submitted the question.

Thanks for catching it before I did.

Nejc Vukovic
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points
Nejc Vukovic
.a{fill-rule:evenodd;}techdegree seal-36
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points

Hi there Matthew Lehman .

I looked at your code: 

function printList( list ) {
  var listHTML = '<ol>';
  for (var i = 0; i < list.length; i += 1) {
    listHTML += '<li>' + list[i] + '</li>';
  }
  listHTML += '</ol>';
  print(listHTML);
}

function print(html) {
  document.write(html);
}

My advice (a bit more DRY): 

function printList( list ) {
  var listHTML = '<ol>';
  for (var i = 0; i < list.length; i += 1) {
    listHTML += '<li>' + list[i] + '</li>';
  }
  listHTML += '</ol>';
  document.write(listHTML);
}

You have to be careful -> the print() method is already reserved for JavaScript see here: W3Schools. Not that you can have a problem because of it - you use it window.print() , but just for the future to avoid any unsuspected problems.

And just a little bit of advice: use the Mozilla Developer Network to get explenations about JavaScript stuff and examples of how you can use the methods provide by JavaScript itself.

Try it out and let me know.