Javascript “怎么做？”；嵌套的；对象分解 const{A:{B}={A:{B:C} 控制台日志（B）；//

你可以这样做

const obj = {A:{B:"C"}};

const {A} = obj;
const {A:{B}} = obj;

console.log(B); // <-- "C" is printed.
console.log(A); // <-- Works obviously.

或

---

你可以这样做

const obj = {A:{B:"C"}};

const {A} = obj;
const {A:{B}} = obj;

console.log(B); // <-- "C" is printed.
console.log(A); // <-- Works obviously.

或

const { A, A:{ B } } = {A :{ B:"C" } }

const { A } = { A :{ B:"C" } }
const { B } = A;