Re: JavaScript test for even or odd number

> I'd be interested to hear from anyone
> who can offer alternative solutions.

hi colin

well just going with the flow here, you can get your function to return
true for even and false for odd (like you wanted) like this --

   function number_check(value) { return ( 1 - (value%2) ) }

notice you have to flip the result of the mod, which returns 0 for even and
1 for odd, to get 1=true (i.e. it's even) and 0=false (i.e. it's odd)

"flipping" (by subtracting something that you know is either 0 or 1 from 1)
is an old programmer's trick

note that there is a certain elegance to this solution, but it comes with a
price -- a wee amount of obfuscation -- which means you should really throw
in a comment line about what it's doing

   function number_check(value) {
  //  returns true if value is even, false if value is odd
      return ( 1 - (value%2) ) }

___________________
rudy limeback
http://www.interlog.com/~r937/
http://evolt.org

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