ES6的对象方法扩展

Object.assign 对象的合并

<script>
            // Object.assign 对象的合并
            const config1={
                host:'localhost',
                port:3306,
                name:'root',
                pass:'root',
                test:'test'
            }
            const config2={
                host:'http://atguigu.com',
                port:3306,
                name:'asd das ',
                pass:'tessss',
            }
            console.log(Object.assign(config1,config2));
            // 合并起来如果名字重复后面的会覆盖前面的
        </script>

Object.setPrototypeOf  设置获取原型对象

const school = {
                name:'王老五'
            }
            const cities = {
                xiaoqu:['北京','上海','大连']
            }
            
            Object.setPrototypeOf(school,cities)
            console.log(school);

 获取原型

// 获取原型
            console.log(Object.getPrototypeOf(school));