函数中的ES6解构

const person = {
  name: 'Alice',
  age: 25,
  city: 'Wonderland'
};

const { name, age, city } = person;

console.log(name); // 输出: Alice
console.log(age);  // 输出: 25
console.log(city); // 输出: Wonderland

const numbers = [1, 2, 3, 4, 5];

const [first, second, ...rest] = numbers;

console.log(first);  // 输出: 1
console.log(second); // 输出: 2
console.log(rest);   // 输出: [3, 4, 5]

function printUser({ name, age }) {
  console.log(`Name: ${name}, Age: ${age}`);
}

const user = { name: 'Bob', age: 30 };
printUser(user); // 输出: Name: Bob, Age: 30

const person = {
  firstName: 'Alice',
  lastName: 'Smith'
};

const { firstName: name, lastName: surname } = person;

console.log(name);    // 输出: Alice
console.log(surname); // 输出: Smith

const person = {
  name: 'Alice'
};

const { name, age = 18 } = person;

console.log(name); // 输出: Alice
console.log(age);  // 输出: 18