# isBoxedPrimitive > Test if a value is a JavaScript boxed primitive.
## Usage ```javascript var isBoxedPrimitive = require( '@stdlib/assert/is-boxed-primitive' ); ``` #### isBoxedPrimitive( value ) Tests if a `value` is a JavaScript boxed primitive. ```javascript var bool = isBoxedPrimitive( new Boolean( false ) ); // returns true bool = isBoxedPrimitive( true ); // returns false ```
## Notes - Boxed primitive objects can be created with one of the following: - `new Boolean()` - `new Number()` - `new String()` - `Object( Symbol() )` (ES6/ES2015)
## Examples ```javascript var Number = require( '@stdlib/number/ctor' ); var isBoxedPrimitive = require( '@stdlib/assert/is-boxed-primitive' ); var bool = isBoxedPrimitive( new Boolean( false ) ); // returns true bool = isBoxedPrimitive( new String( 'beep' ) ); // returns true bool = isBoxedPrimitive( new Number( 3.14 ) ); // returns true bool = isBoxedPrimitive( false ); // returns false bool = isBoxedPrimitive( 0 ); // returns false bool = isBoxedPrimitive( '' ); // returns false bool = isBoxedPrimitive( null ); // returns false bool = isBoxedPrimitive( void 0 ); // returns false bool = isBoxedPrimitive( [] ); // returns false bool = isBoxedPrimitive( {} ); // returns false ```