The Number.MAX_VALUE static data property represents the maximum numeric value representable in JavaScript.
Value
21024 - 2971, or approximately 1.7976931348623157E+308.
Description
Values larger than MAX_VALUE are represented as Infinity and will lose their actual value.
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();
}