---
id: 5d7925346f4f2da6df4354a6
title: Part 025
challengeType: 0
isBeta: true
---
## Description
Define an empty function `applyFn` which takes an argument `str`. Use the curly brace syntax with an anonymous function. Do not wrap parentheses around the parameter.
## Instructions
## Tests
```yml
tests:
- text: See description above for instructions.
testString: assert(code.replace(/\s/g, "").includes("constapplyFn=str=>{}"));
```
## Challenge Seed
```html
```
### Before Test
### After Test
```html
```
## Solution