1 简单数据类型

var obj = {
    "name": 'xu',
    "age": 23
} //原数组 
var newObj1 = obj; //浅拷贝
var newObj2 = Object.assign({},obj); //深拷贝
var newObj3 = {...obj}; //深拷贝
var newObj4 = JSON.parse(JSON.stringify(obj)); //深拷贝
obj.name = 'leon';
obj.age = 666 ;
console.log(obj);
console.log(newObj1);
console.log(newObj2);
console.log(newObj3);
console.log(newObj4);

2 复杂数据类型

        var obj = {
            name: 'xu',
            age: 23,
            num:[1,2,3,4]
        } //原数组 
        var newObj1 = obj; //浅拷贝
        var newObj2 = Object.assign({},obj); //浅拷贝
        var newObj3 = {...obj}; //浅拷贝
        var newObj4 = JSON.parse(JSON.stringify(obj)); //深拷贝
        obj.name = 'leon';
        obj.num[0] = 6;
        console.log(obj);
        console.log(newObj1);
        console.log(newObj2);
        console.log(newObj3);
        console.log(newObj4);