🔰destructuring arguments

🚧 under construction -> merge

JS ⟩ operator ⟩ assignment ⟩ destructuring ⟩ arguments

💈範例

👉 See： object destructuring for more info.

const {log} = console;

// function parameter by object destructuring
function f ({
  hi = 2,         // default param
  ...options      // other params as an object ⭐️
}={}) {

  log(options);   
  return hi;      
}

// test run
f({x: 1, y: 2, hi: 3});      // 3
// options = { x: 1, y: 2 }

👥 相關

• nested default values

📗 參考

• JS.info ⟩ smart function parameters

• JavaScript: The Definitive Guide ⟩

  • 3.10.3 Destructuring Assignment

  • 8.3.5 Destructuring Function Arguments into Parameters

🚧

• merge with destructured parameter