freeCodeCamp/curriculum/challenges/arabic/08-coding-interview-prep/data-structures/create-and-add-to-sets-in-e...

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---
id: 587d8254367417b2b2512c70
title: Create and Add to Sets in ES6
challengeType: 1
videoUrl: ''
localeTitle: ''
---
## Description
undefined
## Instructions
undefined
## Tests
<section id='tests'>
```yml
tests:
- text: ''
testString: 'assert(function(){var test = checkSet(); return (test.size == 6) && test.has(1) && test.has(2) && test.has(3) && test.has("Taco") && test.has("Cat") && test.has("Awesome");}, "Your <code>Set</code> should only contain the values <code>1, 2, 3, Taco, Cat, Awesome</code>.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function checkSet() {
var set = new Set([1, 2, 3, 3, 2, 1, 2, 3, 1]);
// change code below this line
// change code above this line
console.log(set);
return set;
}
checkSet();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>