freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/use-the-every-method-to-check-that-every-element-in-an-array-meets-a-criteria.english.md

---
id: 587d7dab367417b2b2512b6e
title: Use the every Method to Check that Every Element in an Array Meets a Criteria
challengeType: 1
---

## Description
<section id='description'>
The <code>every</code> method works with arrays to check if <em>every</em> element passes a particular test. It returns a Boolean value - <code>true</code> if all values meet the criteria, <code>false</code> if not.
For example, the following code would check if every element in the <code>numbers</code> array is less than 10:
<blockquote>var numbers = [1, 5, 8, 0, 10, 11];<br>numbers.every(function(currentValue) {<br>&nbsp;&nbsp;return currentValue < 10;<br>});<br>// Returns false</blockquote>
</section>

## Instructions
<section id='instructions'>
Use the <code>every</code> method inside the <code>checkPositive</code> function to check if every element in <code>arr</code> is positive. The function should return a Boolean value.
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: Your code should use the <code>every</code> method.
    testString: assert(code.match(/\.every/g), 'Your code should use the <code>every</code> method.');
  - text: <code>checkPositive([1, 2, 3, -4, 5])</code> should return <code>false</code>.
    testString: assert(!checkPositive([1, 2, 3, -4, 5]), '<code>checkPositive([1, 2, 3, -4, 5])</code> should return <code>false</code>.');
  - text: <code>checkPositive([1, 2, 3, 4, 5])</code> should return <code>true</code>.
    testString: assert(checkPositive([1, 2, 3, 4, 5]), '<code>checkPositive([1, 2, 3, 4, 5])</code> should return <code>true</code>.');
  - text: <code>checkPositive([1, -2, 3, -4, 5])</code> should return <code>false</code>.
    testString: assert(!checkPositive([1, -2, 3, -4, 5]), '<code>checkPositive([1, -2, 3, -4, 5])</code> should return <code>false</code>.');

```

</section>

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

<div id='js-seed'>

```js
function checkPositive(arr) {
  // Add your code below this line


  // Add your code above this line
}
checkPositive([1, 2, 3, -4, 5]);
```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>