---
id: 5d79253a2febbb77098730b9
title: Part 136
challengeType: 0
dashedName: part-136
---
# --description--
The `every` method checks if all elements of an array satisfy the provided testing function.
Use it to add an `everyeven` function to `spreadsheetFunctions` which checks if all values passed in are even`spreadsheetFunctions` which checks if all values passed in are even.
# --hints--
See description above for instructions.
```js
assert(
spreadsheetFunctions.everyeven([2, 6, 4, 0, 20]) &&
!spreadsheetFunctions.everyeven([10, 0, 9, 2]) &&
code.includes('.every')
);
```
# --seed--
## --before-user-code--
```html
Spreadsheet
```
## --after-user-code--
```html
```
## --seed-contents--
```html
```
# --solutions--
```html
```