MENU


Number Static Properties

Number.EPSILON

The smallest interval between two representable numbers.

Number.MAX_SAFE_INTEGER

The maximum safe integer in JavaScript (253 - 1).

Number.MAX_VALUE

The largest positive representable number.

Number.MIN_SAFE_INTEGER

The minimum safe integer in JavaScript (-(253 - 1)).

Number.MIN_VALUE

The smallest positive representable number - that is, the positive number closest to zero (without actually being zero).

Number.NaN

Special "not a number" value.

Number.NEGATIVE_INFINITY

Special value representing negative infinity; returned on overflow.

Number.POSITIVE_INFINITY

Special value representing infinity; returned on overflow.

Number.prototype

Allows the addition of properties to a Number object.


console.log(Number.EPSILON);
console.log(Number.MAX_SAFE_INTEGER);
console.log(Number.MAX_VALUE);
console.log(Number.MIN_SAFE_INTEGER);
console.log(Number.MIN_VALUE);
console.log(Number.NaN);
console.log(Number.NEGATIVE_INFINITY);
console.log(Number.POSITIVE_INFINITY);

console.log(NaN);
console.log(typeof Infinity);
// console.log(NEGATIVE_INFINITY);  // ReferenceError

Number.prototype.double = function () {
  return this.valueOf() * 2;
};
console.log((20).double().double());

2.220446049250313e-16 9007199254740991 1.7976931348623157e+308 -9007199254740991 5e-324 NaN -Infinity Infinity NaN number 80