# isInheritedProperty > Test if an object has an inherited property.
## Usage ```javascript var isInheritedProperty = require( '@stdlib/assert/is-inherited-property' ); ``` #### isInheritedProperty( value, property ) Returns a `boolean` indicating if a `value` has an inherited `property`. ```javascript var obj = { 'beep': 'boop' }; var bool = isInheritedProperty( obj, 'beep' ); // returns false bool = isInheritedProperty( obj, 'hasOwnProperty' ); // returns true bool = isInheritedProperty( obj, 'bap' ); // returns false ```
## Notes - The function does **not** throw when provided `null` or `undefined`. Instead, the function returns `false`. ```javascript var bool = isInheritedProperty( null, 'a' ); // returns false bool = isInheritedProperty( void 0, 'a' ); // returns false ``` - Value arguments other than `null` or `undefined` are coerced to `objects`. ```javascript var bool = isInheritedProperty( 'beep', 'toString' ); // returns true ``` - Non-symbol property arguments are coerced to `strings`. ```javascript function Foo() { return this; } Foo.prototype.null = true; Foo.prototype[ '[object Object]' ] = true; var obj = new Foo(); var bool = isInheritedProperty( obj, null ); // returns true bool = isInheritedProperty( obj, {} ); // returns true ```
## Examples ```javascript var isInheritedProperty = require( '@stdlib/assert/is-inherited-property' ); var bool = isInheritedProperty( {}, 'hasOwnProperty' ); // returns true bool = isInheritedProperty( { 'a': 'b' }, 'a' ); // returns false bool = isInheritedProperty( { 'a': 'b' }, 'c' ); // returns false bool = isInheritedProperty( { 'a': 'b' }, null ); // returns false bool = isInheritedProperty( null, 'a' ); // returns false bool = isInheritedProperty( void 0, 'a' ); // returns false bool = isInheritedProperty( { 'null': false }, null ); // returns false bool = isInheritedProperty( { '[object Object]': false }, {} ); // returns false ```