> For the complete documentation index, see [llms.txt](https://docs.angular-package.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.angular-package.dev/type/are/areundefined/every.md).

# every()

## `areUndefined().every()`

Checks whether every provided [`value`](https://docs.angular-package.dev/type/are/areundefined/pages/4qDejG5UQxzVDJuFmYmh#...values-any) of [`areUndefined()`](/type/are/areundefined.md) is [`undefined`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined).

{% hint style="info" %}
The method uses [`every()`](/type/are/aredeterminer/every.md) method of [`areDeterminer()`](/type/are/aredeterminer.md).
{% 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/areundefined/pages/4qDejG5UQxzVDJuFmYmh#...values-any) of [`areUndefined()`](/type/are/areundefined.md) are [`undefined`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined).

## Example usage

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

areUndefined(undefined, 2, 3, new String('4')).every((result, value, payload) => {
  result // false
  value // [ undefined, 2, 3, String]
  payload // undefined
  return result;
}); // false, boolean
```