📦expression

a statement that evaluates to a value.

JS ⟩ statement ⟩ expression

(statement) A fragment of code that produces a value.

🔴 主題

• operator

• primary expression

  • object literal / array literal

  • function expression

  • invocation expression：f() - calls a function.

• left-hand side expression

  • property access expression

⭐️ 重點

📗 參考

📘 手冊