E-mail
Evaluates the argument to determine whether it is a finite number.
Core function
Syntax
isFinite( number )
Parameters
| Parameter | Description |
|---|---|
| number | The number to evaluate. |
Description
isFinite is a top-level function and is not associated with any object.
You can use this method to determine whether a number is a finite number. The isFinite method examines the number in its argument. If the argument is NaN, positive infinity or negative infinity, this method returns false; otherwise, it returns true.
Examples
You can check client input to determine whether it is a finite number.