MACROMEDIA FLASH MX 2004 - ACTIONSCRIPT Reference Manual page 407

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