Object.assign

let testObj = {        a:[1,2,4],        b:{            name:'ls',            school:['huf','yelu'],            parent:{                father:'lili',                mother:'xixi'            }        },        c:function() {            alert(this.b.name)        }    }    let newObj = Object.assign(testObj);    newObj.b.parent.mother = 'qinghua';    newObj.a[0] = 4;    console.log(testObj.b.parent.mother);//qinghua    console.log(testObj.a[0])//4    console.log(newObj.c);//ƒ () {alert(this.b.name)}

数组和对象两个引用的是同一块内存

序列/反序列

let testObj = {        a:[1,2,4],        b:{            name:'ls',            school:['huf','yelu'],            parent:{                father:'lili',                mother:'xixi'            }        },        c:function() {            alert(this.b.name)        }    }    let newObj = JSON.parse(JSON.stringify(testObj));    newObj.b.parent.mother = 'qinghua';    newObj.a[0] = 4;    console.log(testObj.b.parent.mother);//xixi    console.log(testObj.a[0])//1    console.log(newObj.c);//undefined

数组和对象引用的不是同一块内存，但是函数克隆失败