---
id: 5ddb965c65d27e1512d44dac
title: Part 19
challengeType: 0
isBeta: true
---
## Description
Provide the number zero as the initial value of the `reduce()` method by passing it as the second argument.
Here is an example of a `reduce()` method with an empty object as its initial value:
```js
arr.reduce((accumulator, currentValue) => {
/*code to run*/
}, {});
```
## Instructions
## Tests
```yml
tests:
- text: See description above for instructions.
testString: assert( code.replace(/\s/g, '').match(/reduce\(\(accumulator\,currentValue\)\=\>\{\/\*codetorun\*\/\}\,0\)/) );
```
## Challenge Seed
```html
```
### Before Test
### After Test
```html