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)}

陣列和物件兩個引用的是同一塊記憶體

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

陣列和物件引用的不是同一塊記憶體，但是函式克隆失敗