Updated: March 2009
Activates conditional compilation support within comments in a script.
The @cc_on statement activates conditional compilation within comments in a script.
It is not common to use conditional compilation variables in scripts written for ASP or ASP.NET pages or command-line programs because the capabilities of the compilers can be determined by using other methods.
When you write a script for a Web page, always put conditional compilation code in comments. This enables hosts that do not support conditional compilation to ignore it.
It is strongly recommended that you use the @cc_on statement in a comment, so that browsers that do not support conditional compilation will accept your script as valid syntax:
An @if or @set statement outside of a comment also activates conditional compilation.
The following example illustrates the use of the @cc_on statement.
/*@cc_on @*/
/*@
document.write("JScript version: " + @_jscript_version + ".");
document.write("<br />");
@if (@_win32)
document.write("Running on the 32-bit version of Windows.");
@elif (@_win16)
document.write("Running on the 16-bit version of Windows.");
@else
document.write("Running on a different operating system.");
@end
@*/
Version 3
Concepts
Reference
Date | History | Reason |
|---|
March 2009
| Modified introduction and remarks and added example. |
Content bug fix.
|