isNumber

Test if a value is a number.

Usage

var isNumber = require( '@stdlib/assert/is-number' );

isNumber( value )

Tests if a value is a number.

var bool = isNumber( 3.14 );
// returns true

bool = isNumber( new Number( 3.14 ) );
// returns true

bool = isNumber( NaN );
// returns true

bool = isNumber( null );
// returns false

isNumber.isPrimitive( value )

Tests if a value is a primitive number.

var bool = isNumber.isPrimitive( 3.14 );
// returns true

bool = isNumber.isPrimitive( NaN );
// returns true

bool = isNumber.isPrimitive( new Number( 3.14 ) );
// returns false

isNumber.isObject( value )

Tests if a value is a Number object.

var bool = isNumber.isObject( 3.14 );
// returns false

bool = isNumber.isObject( new Number( 3.14 ) );
// returns true

Examples

var isNumber = require( '@stdlib/assert/is-number' );

var bool = isNumber( 5 );
// returns true

bool = isNumber( new Number( 5 ) );
// returns true

bool = isNumber( NaN );
// returns true

bool = isNumber( '5' );
// returns false

bool = isNumber( null );
// returns false