Microsoft JScript
Conditional Compilation Variables
Language Reference
Version 3

See Also


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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