Number() constructor

The Number() constructor creates a Number object.

Syntax

new Number(value)

Parameters

value
The numeric value of the object being created.

Examples

Creating Number objects

const a = new Number('123'); // a === 123 is false
const b = Number('123');     // b === 123 is true
a instanceof Number;         // is true
b instanceof Number;         // is false

Specifications

Specification
ECMAScript (ECMA-262)
The definition of 'Number constructor' in that specification.

Browser compatibility

BCD tables only load in the browser

See also

  • NaN
  • The Math global object
  • Integers with arbitrary precision: BigInt