Need Javascript match help

I have a script that defines a variable as follows:

  var offendingChar = value.match(pattern)

Code (markup):

How do I change the definition of that variable to be opposite of what it is
i.e. instead of matching, everything that doesn't match pattern?

Is this possible?

- Bina.

 

Could you post your pattern, and maybe an example of what you're trying to do?