help with isNaN

[leocrawf]

I have this simple check but for some reason javascript is not seeing the var as a number even when it is a number. This is the code:


if(isNaN(usagePos1)){

Process(usagePos1);


} else {

alert(usagePos1+" is not a numeric value! Please enter a numeric value!");
return false;

}
usagePos1 is actually passed as a parameter from a split()

Any ideas?

[Arch_Angel]

As far I know, the result from a split() is always an array and passing an array to the isNaN() function would most likely give you some incorrect results. Might want to loop through the array usagePos1, passing each value through isNaN().

[hassanvoyeau]

first line should be : if(!isNaN(usagePos1)) since isNaN returns false when usagePos1 is a number.

[leocrawf]

Thank you all so much for your replies. I will look into it.

[Arch_Angel]

first line should be : if(!isNaN(usagePos1)) since isNaN returns false when usagePos1 is a number.

Oh yeah, that's right. isNaN is already in the negative. If isNaN is true, that means it's Not-a-Number. If it's false, that mean's it IS a number. That one slipped me. But my excuse is, it was 4am in the morning. :P

[leocrawf]

Thank you all it works perfectly.