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

Try it

function multiply(x, y) {
  if (x * y > Number.MAX_VALUE) {
    return "Process as Infinity";
  }
  return x * y;
}

console.log(multiply(1.7976931348623157e308, 1));
// Expected output: 1.7976931348623157e+308

console.log(multiply(1.7976931348623157e308, 2));
// Expected output: "Process as Infinity"

Value

2¹⁰²⁴ - 2⁹⁷¹, or approximately 1.7976931348623157E+308.

Description

Values larger than MAX_VALUE are represented as Infinity and will lose their actual value. As mentioned in Number.EPSILON, the precision of numbers depends on their magnitude. Integers can only be represented precisely up to Number.MAX_SAFE_INTEGER, which is 2⁵³ - 1.

Because MAX_VALUE is a static property of Number, you always use it as Number.MAX_VALUE, rather than as a property of a number value.

Examples

Using MAX_VALUE

The following code multiplies two numeric values. If the result is less than or equal to MAX_VALUE, the func1 function is called; otherwise, the func2 function is called.

if (num1 * num2 <= Number.MAX_VALUE) {
  func1();
} else {
  func2();
}

Specifications

Browser compatibility

See also

• Number.MIN_VALUE
• Number.MAX_SAFE_INTEGER
• Number