🔰module

JS ⟩ module

Modules provide structure to bigger programs by separating the code into pieces with clear interfaces and dependencies.

• interface： the part that’s visible from other modules.

• dependencies： other modules that it makes use of.

⭐️ 重點

in Node.js, each JS file is treated as a module.

in a module there's no "module scope object" for these top-level declarations to be added to as property.

( 👉 compare： global var / function is global object property❗️)

A "variable" is just a property of the environment record (associated with the currently executing block /function /module /script).

The relations between modules are called dependencies. When a module needs a piece from another module, it is said to depend on that module.

🔴 主題

📗 參考

👥 相關

🐞 除錯