💾arr.isEmpty

JS ⟩ object ⟩ built-in ⟩ Array ⟩ custom properties ⟩ .isEmpty

💾 程式

// 🔸 arr.isEmpty
Object.defineProperty(Array.prototype, 'isEmpty', {
  get() { return this.length === 0 },
});

📘 手冊

• Object.defineProperty()

⬇️ 應用

• Google Apps Script app helpers.