递归实现深拷贝

```var deepCopy = function(obj) {

if (typeof obj !== 'object') return obj

var newObj = (Object.prototype.toString.call(obj) === '[object Array]') ? [] : {}

for (var key in obj) {

    if (obj.hasOwnProperty(key)) {

        newObj[key] = (typeof obj[key] !== 'object') ? obj[key]: deepCopy(obj[key])

    }
}
return newObj

}
```

递归实现深拷贝

原文：https://www.cnblogs.com/hff-syt/p/12005807.html