isFinite
The isFinite function checks if a value is a finite number.
Syntax
typescript
isFinite(value)Parameters
| Name | Type | Description |
|---|---|---|
value | number | Value to be checked. |
Return Value
| Type | Description |
|---|---|
boolean | true if the value is a finite number, else false. |
Examples
typescript
isFinite(10); // true
isFinite(Infinity); // false
isFinite(NaN); // falseNotes
- Throws a
TypeErrorif the value is not a number. - Useful for mathematical validations and limit control.