This is a function normally found in the C language. However, it is useful to script developers as well and may be available in some implementations as an extension to the ECMA standard functionality.

Any whitespace character should return true for this function. The following character codes are considered to be whitespace:

• The space character

• A form feed character

• A Newline character

• A carriage return

• A tab character

• A vertical tab

Strictly speaking, this function should be coded to be aware of locale specific issues. You may want to take the example simulation provided here and modify it to your own needs to support that. This is just a basic working example.

Example code:

   // Test for space characters

   function isSpace(aChar)

   {

      myCharCode = aChar.charCodeAt(0);

   

      if(((myCharCode >  8) && (myCharCode < 14)) ||

         (myCharCode == 32))

      {

         return true;

      }

   

      return false;

   }