第七色在线视频,2021少妇久久久久久久久久,亚洲欧洲精品成人久久av18,亚洲国产精品特色大片观看完整版,孙宇晨将参加特朗普的晚宴

課程

/前端開發(fā)

/JavaScript

/電商網(wǎng)站前端架構(gòu)

var?obj?=?{a:1,b:2};
var?sub?=?Object.create(obj,{});
console.log(sub)//Object?{a:?1,?b:?2}