isNumeric?

[blueindian1]

Hi,

Is there a function in ASP that can tell me if a character is numeric? Something to VB's IsNumeric function?

Thanks,

Rich

 

[cbokowski]

IsNumeric is available in vbscript.

VBScript Documentation.

http://msdn.microsoft.com/scripting/vbscript/download/vbsdoc.exe

 

[jasonsalas]

Hi Rich,

A good example of the VBScript IsNumeric object is at:

http://www.devguru.com/Technologies/vbscript/quickref/isnumeric.html

 

[CodeFish]

Hi blueindian1,

I use IsNumeric in VB Script, but one thing you should be aware of (sorry if you already do!)

In MSDN:
"IsNumeric returns True if the ENTIRE expression is recognized as a number; otherwise, it returns False."


IsNumeric uses the regional settings in the control panel for determining valid numbers (i.e formats like 123,000 etc.). Even if you server has the appropriate settings you can still get problems when commas are invovled.

For example our setting is English(UK) and when I test the condtions:-

IsNumeric ("34,55,66,&quot and more extreme,
IsNumeric ("3456,34,,,,,56&quot

they are classed as Numeric But in my view ARE NOT because I can't see how the ENTIRE Expression can be evaluated as a number. Anyways I created a custom IsNumber Function, and used IsNumeric in it as a primary filter, then added more checking when commas are invovled.

Regards,

Codefish