// var obj1 = {
//     name: '李四'
// }
// var obj2 = obj1
// obj1.name = '张三'
// console.log(obj1,obj2);
// 实现 1.Object.assign()
var person = {
    name: '张三',
    age: '12',
    relation: {
        farther:'张以某'
    }
}
var p1 = {}
Object.assign(p1,person)
console.log(p1);
person.name = '李四'
console.log(person.name,p1.name) //'李四' '张三'
person.relation.farther = '隔壁王叔'
console.log(p1.relation.farther)  //隔壁王叔'
// 循环赋值，Object.hasOwnProperty()
qDeep = (obj1,obj2)=>{
    for(let props in obj1) {
        if (obj1.hasOwnProperty(props)) {
            obj2[props] = obj1[props]
        }
    }
}
let a1 = {
    name: '小狗'
}
let a2 = {}
qDeep(a1,a2)
console.log(a2);
a1.name = '小猫咪'
console.log(a1,a2);
//深拷贝
sDeep = (target)=>{
    // 1. 判断目标是对象还是数组
    // Array.isArray()
    let targetClone = Object.prototype.toString.call(target) === "[object Array]"? [] : {}
    if (target&&typeof target ==="Object") {
        for(props in target) {
            if (target.hasOwnProperty(props)) {
                if(target[props]&&typeof target[props] ==="Object") {
                    targetClone[props] = sDeep(target[props])
                }else{
                    targetClone[props] = target[props]
                }
            }
        }
    }
    return targetClone
}