What is a Number Object in JavaScript

In JavaScript, a Number is a built-in object representing numerical values, including integers and floating-point numbers. It also provides methods and properties for working with numbers.

Syntax

var val = new Number(number);

If you pass the number argument as a non-number argument, then the argument cannot be converted into a number. Instead, it returns NaN (Not-a-Number).

Example

let num = new Number(11)
console.log(num)

let data = new Number('Eleven')
console.log(data)

Output

[Number: 11]
[Number: NaN]

We passed the number and non-number arguments and saw the output.

Javascript Number Properties

Number.EPSILON

The Number.EPSILON property represents the difference between 1 and the smallest floating-point Number greater than 1.

You do not have to create the Number object to access this static property.

Example

let data = Math.abs(0.2 - 0.3 + 0.1);

console.log(data);
console.log(Number.EPSILON);

console.log(data < Number.EPSILON);

We have used the Javascript Math module. See the output.

2.7755575615628914e-17 
2.220446049250313e-16
 true

Number.MAX_VALUE

The Number.MAX_VALUE property represents the maximum numeric value representable in JavaScript.

Let’s see the Number’s Max value.

console.log(Number.MAX_VALUE);

Output

1.7976931348623157e+308

Now, let’s check with other values.

function checkInfinity(a, b) {
  if (a * b > Number.MAX_VALUE) {
    return ("You Got Infinity Number");
  }
  return (a * b);
}

console.log(checkInfinity(1.7976931348623157e+308, 1))

console.log(checkInfinity(1.7976931348623157e+308, 2))

Output

1.7976931348623157e+308 
You Got Infinity Number 

Number.MIN_VALUE

The Number.MIN_VALUE property describes the smallest positive numeric value representable in JavaScript.

console.log(Number.MIN_VALUE)

Output

5e-324

See the following code.

function minimumCheck(a, b) {
  if (a * b < Number.MIN_VALUE) {
    return "Smallest Integer"
  }
  return (a * b);
}

console.log(minimumCheck(5e-324, 1))
console.log(minimumCheck(-1.7976931348623157e+308, 2))

Output

5e-324
Smallest Integer

Number.NaN

The Number.NaN property represents Not-A-Number. The equivalent of Javascript NaN.

Number.prototype

The Number.prototype property represents a prototype for a Number constructor.

console.log(Number.MAX_SAFE_INTEGER)

9007199254740991

console.log(Number.MIN_SAFE_INTEGER)

-9007199254740991

That’s it for this tutorial.