# isDataView
> Test if a value is a [DataView][mdn-dataview].
## Usage
```javascript
var isDataView = require( '@stdlib/assert/is-dataview' );
```
#### isDataView( value )
Tests if a value is a [`DataView`][mdn-dataview].
```javascript
var ArrayBuffer = require( '@stdlib/array/buffer' );
var DataView = require( '@stdlib/array/dataview' );
var bool = isDataView( new DataView( new ArrayBuffer( 10 ) ) );
// returns true
bool = isDataView( [] );
// returns false
```
## Examples
```javascript
var Float32Array = require( '@stdlib/array/float32' );
var Float64Array = require( '@stdlib/array/float64' );
var Int8Array = require( '@stdlib/array/int8' );
var Int16Array = require( '@stdlib/array/int16' );
var Int32Array = require( '@stdlib/array/int32' );
var Uint8Array = require( '@stdlib/array/uint8' );
var Uint8ClampedArray = require( '@stdlib/array/uint8c' );
var Uint16Array = require( '@stdlib/array/uint16' );
var Uint32Array = require( '@stdlib/array/uint32' );
var ArrayBuffer = require( '@stdlib/array/buffer' );
var DataView = require( '@stdlib/array/dataview' );
var isDataView = require( '@stdlib/assert/is-dataview' );
var bool = isDataView( new DataView( new ArrayBuffer( 10 ) ) );
// returns true
bool = isDataView( new Float32Array( 10 ) );
// returns false
bool = isDataView( new Int8Array( 10 ) );
// returns false
bool = isDataView( new Uint8Array( 10 ) );
// returns false
bool = isDataView( new Uint8ClampedArray( 10 ) );
// returns false
bool = isDataView( new Int16Array( 10 ) );
// returns false
bool = isDataView( new Uint16Array( 10 ) );
// returns false
bool = isDataView( new Int32Array( 10 ) );
// returns false
bool = isDataView( new Uint32Array( 10 ) );
// returns false
bool = isDataView( new Float64Array( 10 ) );
// returns false
bool = isDataView( new Array( 10 ) );
// returns false
bool = isDataView( new ArrayBuffer( 10 ) );
// returns false
bool = isDataView( {} );
// returns false
bool = isDataView( null );
// returns false
```
[mdn-dataview]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView