🍄function

🚧 under construction -> named function

JS ⟩ value ⟩ object ⟩ function

an object that can be called (supports the [[Call]] internal method).

• its name (or a variable that refers to it) is an identifier.

// function declarations
function  f() { ... }          // normal function
function* f() { ... }          // generator function
async function  f() { ... }    // async function
async function* f() { ... }    // async generator function

⭐️ 重點

⚖️parameter vs. argument

every function

• is actually a Function object.

• is a closure.

In JavaScript, function arguments are always passed by value. (values of the variables are copied into the function arguments)

👉 JavaScript Tutorial » Understanding JavaScript Pass-By-Value

• function vs. class ( 👉 class ⟩ class, function 的「💾 程式」 )

• function vs. constructor

method is a function.

a closure (or IIFE) can be used to create a scope to hide variables/functions.

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

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👥 相關

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