isNumber()
Table of Contents
Overview
The isNumber() function takes an expression as an argument, and returns true if it is a valid numerical value. Otherwise, it returns false.
Return Type
- Boolean
Syntax
<variable> = isNumber( <expression> );
(or)<variable> = <expression>.isNumber();
Valid numerical values in single or double quotes will return true.
List and Key-value data type will always return a null value.
| Parameter | Data type | Description |
|---|---|---|
| <variable> | BOOLEAN | Variable which will contain the returned boolean value. |
| <expression> | - |
Examples
numValue = isNumber ("12.3"); // returns true numValue = "1".isNumber (); // returns true numValue = 24.isNumber (); // returns true numValue = (24/2*10).isNumber (); // returns true numValue = "24/2*10".isNumber (); // returns false