Is there a way that I can define a macro similar to C/C++ macros

Question

Editorial Team

Asked: May 30, 20262026-05-30T16:31:05+00:00 2026-05-30T16:31:05+00:00

Is there a way that I can define a macro similar to C/C++ macros in Javascript?

I want to use this for debug statements:
Something like

#ifdef TEST__
#define MYDEBUG(##x) debug(__FILE__,x)
#else
#define debug
#endif

Not necessarily similar, but I want to acheieve that functionality. Is there a way I can do that?

Thanks

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Editorial Team · Answer 1 · 2026-05-30T16:31:07+00:00

Editorial Team

var de = false; // true when debugging
function bug( msg ){ ... display msg ... }

Usage:

de&&bug( "hello world")

When “de” is false (production mode), the overhead is minimal.

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