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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Create an Array

Gunter Schroder
Gunter Schroder
2,804 Points
Posted by Gunter Schroder
Gunter Schroder
2,804 Points

Asked to create an array named data with any 3 numbers in it. Why does this not work?

var data = ['1', '2', '3'];

script.js 
var data = ['1', '2', '3'];
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript Loops</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

4 Answers

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

Because you have quotes around the values, they're considered strings, not numbers.

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Hi Gunter.

It's because you're trying to put your numbers in quotes which turns them into strings. Anything put into quotes like in your example JavaScript treats as a string so you should take them out :-)

Gunter Schroder
Gunter Schroder
2,804 Points
Gunter Schroder
Gunter Schroder
2,804 Points

Ahh....Thanks Seth and Jonathan! Much appreciated!

Sean Do
Sean Do
11,933 Points
Sean Do
Sean Do
11,933 Points 
var data = ['1', '2', '3'];

You're submitting the numbers as a String. Remove the single quotations.