freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/comparison-with-the-less-than-operator.md

---
id: 56533eb9ac21ba0edf2244d6
title: Comparison with the Less Than Operator
challengeType: 1
videoUrl: 'https://scrimba.com/c/cNVRWtB'
forumTopicId: 16789
---

## Description
<section id='description'>
The <dfn>less than</dfn> operator (<code>&lt;</code>) compares the values of two numbers. If the number to the left is less than the number to the right, it returns <code>true</code>. Otherwise, it returns <code>false</code>. Like the equality operator, <dfn>less than</dfn> operator converts data types while comparing.
<strong>Examples</strong>

```js
2   < 5  // true
'3' < 7  // true
5   < 5  // false
3   < 2  // false
'8' < 4  // false
```

</section>

## Instructions
<section id='instructions'>
Add the less than operator to the indicated lines so that the return statements make sense.
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>testLessThan(0)</code> should return "Under 25"
    testString: assert(testLessThan(0) === "Under 25");
  - text: <code>testLessThan(24)</code> should return "Under 25"
    testString: assert(testLessThan(24) === "Under 25");
  - text: <code>testLessThan(25)</code> should return "Under 55"
    testString: assert(testLessThan(25) === "Under 55");
  - text: <code>testLessThan(54)</code> should return "Under 55"
    testString: assert(testLessThan(54) === "Under 55");
  - text: <code>testLessThan(55)</code> should return "55 or Over"
    testString: assert(testLessThan(55) === "55 or Over");
  - text: <code>testLessThan(99)</code> should return "55 or Over"
    testString: assert(testLessThan(99) === "55 or Over");
  - text: You should use the <code>&lt;</code> operator at least twice
    testString: assert(code.match(/val\s*<\s*('|")*\d+('|")*/g).length > 1);

```

</section>

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

<div id='js-seed'>

```js
function testLessThan(val) {
  if (val) {  // Change this line
    return "Under 25";
  }

  if (val) {  // Change this line
    return "Under 55";
  }

  return "55 or Over";
}

testLessThan(10);
```

</div>



</section>

## Solution
<section id='solution'>


```js
function testLessThan(val) {
  if (val < 25) {  // Change this line
    return "Under 25";
  }

  if (val < 55) {  // Change this line
    return "Under 55";
  }

  return "55 or Over";
}
```

</section>