JavaScript中的宏定义 [英] macro definition in javascript

问题描述

有没有一种方法可以定义类似于Javascript中的C/C ++宏的宏?

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

我想将其用于调试语句:

I want to use this for debug statements: Something like

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

不一定相似，但我想实现该功能.有办法吗?

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

谢谢

推荐答案

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

用法:

de&&bug( "hello world")

当"de"为false(生产模式)时，开销最小.

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

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