递归实现深拷贝

**

递归实现对象中有引用数据类型的深拷贝

const obj = {
     
    data: {
     
         name: '小花',
         age:undefined,
         result: [
             '小白',
             {
     
                 age: 25
             }
         ]
     }
 }

**

function deep(obj) {
     
    let ArrObj = Array.isArray(obj) ? [] : {
     }
    for (const key in obj) {
     
        if (typeof (obj[key]) == 'object') {
     
            ArrObj[key] = deep(obj[key])
        } else {
     
            ArrObj[key] = obj[key]
        }
    }
    return ArrObj;
}
var a1 = deep(obj)
console.log(a1);