复制
1const user = {
2	email: "e@mail.com",
3	password: "12345"
4}
5
6const updateUser = ({ email, password }) => {
7	if (email) {
8		Object.assign(user, { email })
9	}
10
11	if (password) {
12		user.password = password
13	}
14
15	return user
16}
17
18const updatedUser = updateUser({ email: "new@email.com" })
19
20console.log(updatedUser === user)