# every()

## `areNull().every()`

Checks whether **every** provided value of [`areNull()`](https://docs.angular-package.dev/type/are/arenull) is [`null`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null).

{% hint style="info" %}
The method uses [`every()`](https://docs.angular-package.dev/type/are/aredeterminer/every) method of [`areDeterminer()`](https://docs.angular-package.dev/type/are/aredeterminer).
{% endhint %}

### Returns

The **return value** is a [`boolean`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean) indicating whether the provided [`values`](https://docs.angular-package.dev/type/are/arenull/..#...values-any) of [`areNull()`](https://docs.angular-package.dev/type/are/arenull) are [`null`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null).

## Example usage

```typescript
// Example usage.
import { areNull } from '@angular-package/type';

areNull(null, undefined, false, !!null).every((result, value, payload) => {
  result // false
  value // [ null, undefined, false, false ]
  payload // undefined
  return result;
}); // false, boolean
```