`Number.isFinite()`

Determines whether the passed value is a finite number.

Since ES2015 Spec ↗

Syntax

Number.isFinite(value)

Name	Type	Required	Description
`value`	`any`	Yes	The value to test.

boolean — true if the value is a finite number; otherwise false.

console.log(Number.isFinite(42), Number.isFinite(Infinity));

Output

true false

console.log(Number.isFinite('42'), isFinite('42'));

Output

false true

Unlike the global `isFinite`, this does NOT coerce the argument, so strings always return false. Returns false for NaN, Infinity, and -Infinity.