# isArrayLength
> Test if a value is a valid array length.
## Usage
```javascript
var isArrayLength = require( '@stdlib/assert/is-array-length' );
```
#### isArrayLength( value )
Tests if a value is a valid `array` length.
```javascript
var bool = isArrayLength( 5 );
// returns true
bool = isArrayLength( -1 );
// returns false
bool = isArrayLength( 2.0e200 );
// returns false
bool = isArrayLength( 3.14 );
// returns false
bool = isArrayLength( null );
// returns false
```
## Notes
- A valid `length` property for an [`Array`][mdn-array] is any integer value on the interval `[0, 2^32-1]`.
## Examples
```javascript
var isArrayLength = require( '@stdlib/assert/is-array-length' );
var bool = isArrayLength( 5 );
// returns true
bool = isArrayLength( 0 );
// returns true
bool = isArrayLength( 2.0e200 );
// returns false
bool = isArrayLength( 5.256 );
// returns false
bool = isArrayLength( 1.0/0.0 );
// returns false
bool = isArrayLength( -1.0/0.0 );
// returns false
bool = isArrayLength( NaN );
// returns false
bool = isArrayLength( '5' );
// returns false
bool = isArrayLength( null );
// returns false
```
[mdn-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array