解包{}中的对象

const { 属性1, 属性2, ... } = 对象;

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

const user = { name: 'John', age: 25 };
printUser(user); // 输出：Name: John, Age: 25

function getUser() {
  return { name: 'John', age: 25 };
}

const { name, age } = getUser();
console.log(`Name: ${name}, Age: ${age}`); // 输出：Name: John, Age: 25

let a = 1;
let b = 2;

[a, b] = [b, a];
console.log(a, b); // 输出：2 1