如果 javascript 對象是通過引用分配的，那么第二個 console.log 不應(yīng)該顯示 obj2 = {c:3}let obj1 = {a:1}let obj2 = {b:2}obj2 = obj1console.log(obj2) // {a:1}obj1 = {c:3}console.log(obj2)  // still {a:1}