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 Number = require( '@stdlib/number/ctor' ); 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 Number = require( '@stdlib/number/ctor' ); 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 Number = require( '@stdlib/number/ctor' ); var bool = isNumber.isObject( 3.14 ); // returns false bool = isNumber.isObject( new Number( 3.14 ) ); // returns true

Examples

var Number = require( '@stdlib/number/ctor' ); 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