---
id: 5ddb965c65d27e1512d44dd4
title: Part 61
challengeType: 0
isHidden: true
---
## Description
Later we will want to remove these extra `calorieInput` elements that we added. This will happen when the user pushes the "Clear" button.
To keep track of them, add the class name `extra-cal-control` to the `calorieInput` element.
## Instructions
## Tests
```yml
tests:
- text: See description above for instructions.
testString: assert( code.replace(/\s/g, '').match(/calorieInput\.classList\.add\([\'\"\`]extra-cal\-control[\'\"\`]\)/) );
```
## Challenge Seed
```html
```
### Before Test
### After Test
```html