num check

[christoffer]

hi...
i have a form which contains some fields...
in one of the fields you are asked to enter a number.
How can i run a check to make sure the user has typed a number and not a string?

-chris

 

[NickBulka]

You would do this on the client side, in Javascript. When the user submits the form, make sure the field in question contains a numeric value by using the Javascript NaN() function.

 

[Karl Blessing]

if you wanted to validate it AFTER the user has sent it back(though I think it still works best to validate it on clientside) you can use the VBscript function called IsNumeric() throw the string inside of the (), and it'll return true or false if it's numeric ( I assume it accepts any digits including decimals as numeric characters)