Oliver Eyton-Williams f1c9b08cf3 fix(curriculum): add isHidden: false to challenges
This includes certificates (where it does nothing), but does not
include any translations.
2020-05-25 16:25:19 +05:30

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---
id: cf1111c1c11feddfaeb7bdef
title: Nest one Array within Another Array
challengeType: 1
isHidden: false
videoUrl: 'https://scrimba.com/c/crZQZf8'
forumTopicId: 18247
---
## Description
<section id='description'>
You can also nest arrays within other arrays, like below:
```js
[["Bulls", 23], ["White Sox", 45]]
```
This is also called a <dfn>multi-dimensional array<dfn>.
</section>
## Instructions
<section id='instructions'>
Create a nested array called <code>myArray</code>.
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>myArray</code> should have at least one array nested within another array.
testString: assert(Array.isArray(myArray) && myArray.some(Array.isArray));
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
// Only change code below this line
var myArray = [];
```
</div>
### After Test
<div id='js-teardown'>
```js
if(typeof myArray !== "undefined"){(function(){return myArray;})();}
```
</div>
</section>
## Solution
<section id='solution'>
```js
var myArray = [[1,2,3]];
```
</section>