# hasOwnProperty
> Test if an object has a specified property.
## Usage
```javascript
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
```
#### hasOwnProp( value, property )
Returns a `boolean` indicating if a `value` has a specified `property`.
```javascript
var value = {
'beep': 'boop'
};
var bool = hasOwnProp( value, 'beep' );
// returns true
bool = hasOwnProp( value, 'bap' );
// returns false
```
## Notes
- In contrast to the native [Object.prototype.hasOwnProperty][mdn-object-has-own-property], this function does **not** throw when provided `null` or `undefined`. Instead, the function returns `false`.
```javascript
var bool = hasOwnProp( null, 'a' );
// returns false
bool = hasOwnProp( void 0, 'a' );
// returns false
```
- Value arguments other than `null` or `undefined` are coerced to `objects`.
```javascript
var bool = hasOwnProp( 'beep', 'length' );
// returns true
```
- Property arguments are coerced to `strings`.
```javascript
var value = {
'null': false
};
var bool = hasOwnProp( value, null );
// returns true
value = {
'[object Object]': false
};
bool = hasOwnProp( value, {} );
// returns true
```
## Examples
```javascript
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
var bool = hasOwnProp( { 'a': 'b' }, 'a' );
// returns true
bool = hasOwnProp( { 'a': 'b' }, 'c' );
// returns false
bool = hasOwnProp( { 'a': 'b' }, null );
// returns false
bool = hasOwnProp( {}, 'hasOwnProperty' );
// returns false
bool = hasOwnProp( null, 'a' );
// returns false
bool = hasOwnProp( void 0, 'a' );
// returns false
bool = hasOwnProp( { 'null': false }, null );
// returns true
bool = hasOwnProp( { '[object Object]': false }, {} );
// returns true
```
[mdn-object-has-own-property]: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
[@stdlib/assert/has-property]: https://github.com/stdlib-js/assert/tree/main/has-property