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 Removing Items from an Array

javier klijnjan
javier klijnjan
5,409 Points
Posted by javier klijnjan
javier klijnjan
5,409 Points

What is wrong with this code, it says that i'm not storing the first item of the orderQueue in the shipping variable...

i used the methods described on the videos to add and remove items but it doesn't seem to work i been looking the answer for day but nothing seems to work

script.js 
var orderQueue = ['1XT567437','1U7857317','1I9222528'];
var shipping = []

orderQueue.shift();
shipping.push('1XT567437');
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

The instructions say "Create a new variable named shipping -- remove the first item from the array and place it in the shipping variable." But:

var shipping = []            // the instructions did not say "shipping" should be an array

orderQueue.shift();          // this removes the first item, but does not save it anywhere
shipping.push('1XT567437');  // this is not the first item, but a DUPLICATE of the contents

Bonus hint: this task can be done with one statement.

javier klijnjan
javier klijnjan
5,409 Points
javier klijnjan
javier klijnjan
5,409 Points

it was easier than i thought so! thank you very much for the hint, that got me thinking and i was able to pull it off