javascript static data property
Number.MAX_VALUE
The Number.MAX_VALUE static data property represents the maximum numeric value representable in JavaScript.
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.
0
Description
Values larger than MAX_VALUE are represented as Infinity and will lose their actual value. As mentioned in EPSILON, the precision of numbers depends on their magnitude. Integers can only be represented precisely up to 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();
}