第一次实现：
function deepCopy(data) {
let c = data.constructor === 'Array'?[]:{};
for (let key in data) {
if (data.hasOwnProperty(key)) {
if (typeof data[key] === 'Object') {
c[key] = deepCopy(data[key]);
} else {
c[key] = data[key];
}
}
}
return c;
}
var obj = {
a: 1,
b: 2,
c: {
d: 10,
e: 11
}
}
let obj2 = deepCopy(obj);
obj.a = 'aaaa';
obj2.b = 'bbbb';
console.log(obj);
console.log(obj2);
var personInfo = {
name : 'zhang',
age: 26,
family: {
province: 'hunan',
city: 'changsha',
}
};
var copyPerson = deepCopy1(personInfo);
personInfo.name = 'shaunZh';
personInfo.family.province = 'gd';
personInfo.family.city = 'yuenan';
console.log('modify personInfo: ');
console.log(personInfo);
console.log('get copyPerson: ');
console.log(copyPerson);
你的深拷贝函数的值，有考虑过以下值吗？symbol，function，正则，数组，undefined，null，循环引用的对象？
