MACROMEDIA FLASH MX 2004 - ACTIONSCRIPT - Page 407

isNaN() 407
Example
The following are examples of return values for isFinite:
isFinite(56)
// returns true
isFinite(Number.POSITIVE_INFINITY)
// returns false
isNaN()
Availability
Flash Player 5.
Usage
isNaN(expression)
Parameters
expression
A Boolean, variable, or other expression to be evaluated.
Returns
A Boolean value.
Description
Function; evaluates the parameter and returns true if the value is not a number (NaN), indicating
the presence of mathematical errors.
Example
The following code illustrates return values for the isNaN function.
isNaN("Tree")
// returns true
isNaN(56)
// returns false
isNaN(Number.POSITIVE_INFINITY)
// returns false
See also
NaN
, Number.NaN