Conditional Compilation Variables

Welcome to the JScript Language

The following predefined variables are available for conditional compilation. If a variable is not true, it is not defined and behaves as NaN when accessed.

Variable Description
@_win32 True if running on a Win32 system.
@_win16 True if running on a Win16 system.
@_mac True if running on a Apple Macintosh system.
@_alpha True if running on a DEC Alpha processor.
@_x86 True if running on an Intel processor.
@_mc680x0 True if running on a Motorola 680x0 processor.
@_PowerPC True if running on a Motorola PowerPC processor.
@_jscript Always true.
@_jscript_build Contains the build number of the JScript scripting engine.
@_jscript_version Contains the JScript version number in major.minor format.
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