全局对象

¥Global objects

这些对象在所有模块中都可用。

¥These objects are available in all modules.

以下变量可能看起来是全局的，但实际上不是。它们仅存在于 CommonJS 模块 范围内：

¥The following variables may appear to be global but are not. They exist only in the scope of CommonJS modules:

• __dirname

• __filename

• exports

• module

• require()

此处列出的对象特定于 Node.js。内置对象 是 JavaScript 语言本身的一部分，也是全局可访问的。

¥The objects listed here are specific to Node.js. There are built-in objects that are part of the JavaScript language itself, which are also globally accessible.