freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-an.../basic-javascript/nest-one-array-within-anoth...

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---
id: cf1111c1c11feddfaeb7bdef
title: Nest one Array within Another Array
challengeType: 1
---
## Description
<section id='description'>
You can also nest arrays within other arrays, like this: <code>[["Bulls", 23], ["White Sox", 45]]</code>. 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), ''<code>myArray</code> should have at least one array nested within another array.'');'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
// Example
var ourArray = [["the universe", 42], ["everything", 101010]];
// Only change code below this line.
var myArray = [];
```
</div>
### After Test
<div id='js-teardown'>
```js
console.info('after the test');
```
</div>
</section>
## Solution
<section id='solution'>
```js
var myArray = [[1,2,3]];
```
</section>