1 function deepClone(obj) {
2 let newObj;
3 // 判断数据类型
4 if (Array.isArray(obj)) {
5 newObj = [];
6 for (let i = 0; i < obj.length; i++) {
7 // 判断数组中的元素数据类型
8 if (Array.isArray(obj[i])) {
9 // 递归
10 newObj[i] = deepClone(obj[i])
11 } else {
12 newObj[i] = obj[i]
13 }
14 }
15 } else {
16 newObj = {};
17 for (let key in obj) {
18 // 判断对象中的属性值的数据类型
19 if (typeof obj[key] === 'object' && obj[key] !== null) {
20 newObj[key] = deepClone(obj[key])
21 } else {
22 newObj[key] = obj[key]
23 }
24 }
25 }
26
27 return newObj;
28 }
29 let obj = {
30 name: '万仙山',
31 age: 19,
32 hobby: { title: "电影爱好者" },
33 say: function () { console.log('hello'); }
34 }
35 // let obj = {name:'万仙山', age:19, sex:null, say:function(){console.log('hello');}}
36 let res = deepClone(obj)
37 console.log(res);
38 // res.say()
39 res.hobby.title = '游戏终结者';
40 console.log(obj);
