freeCodeCamp/curriculum/challenges/en/08-coding-interview-prep/data-structures/use-spread-and-notes-for-es5-set-integration.en.md

---
id: 587d8255367417b2b2512c73
title: Use Spread and Notes for ES5 Set() Integration
challengeType: 1
---

## Description
<section id='description'>
Do you remember the ES6 spread operator <code>...</code>?
<code>...</code> can take iterable objects in ES6 and turn them into arrays.
Let's create a Set, and check out the spread function.
<blockquote>var set = new Set([1,2,3]);<br>var setToArr = [...set]<br>console.log(setToArr) // returns [ 1, 2, 3 ]</blockquote>
</section>

## Instructions
<section id='instructions'>
In this exercise we will pass a set object to the <code>checkSet</code> function. It should return an array containing the values of the Set.
Now you've successfully learned how to use the ES6 <code>Set()</code> object, good job!
</section>

## Tests
<section id='tests'>

```yml
- text: Your Set was returned correctly!
  testString: 'assert(function(){var test = checkSet(new Set([1,2,3,4,5,6,7])); test === [ 1, 2, 3, 4, 5, 6, 7 ]}, ''Your Set was returned correctly!'');'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function checkSet(set){
   // change code below this line

   // change code above this line
}
```

</div>



</section>

## Solution
<section id='solution'>


```js
function checkSet(set){
return [...set];}
```

</section>