!isNAN

[2ofaKind]

hello,
I'm trying to find an explanation about the function !isNaN.
So my question is what does it do and how does it work in a source code?

Thank you in advance for the help

 

[ggriffit]

have you tried

http://www.lmgtfy.com/?q=isnan+javascript

?

Greg Griffiths
Livelink Certified Developer & ECM Global Star Champion 2005 & 2006

http://www.greggriffiths.org/livelink/

 

[vacunita]

isNaN checks to see if a value is NOT a number. So [red]![/red]isNaN would be the inverse of that, checking to see if the value [red]IS[/red] a number.

var myvalue=567;

if(!isNaN(myvalue))
{
  alert('It is a number');
}

----------------------------------
Phil AKA Vacunita
----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

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