Number() constructor

The Number() constructor creates a Number object.

new Number(value)

value

The numeric value of the object being created.

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

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