Object.assign和序列/反序列

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