摘要: var o = Object.create(null); console.log(o); // {} console.log(o.constructor); // undefined console.log(o.__proto__); // undefined console.log(o instanceof Object); // false 阅读全文
posted @ 2017-06-22 21:47 ax=null 阅读(261) 评论(0) 推荐(0) 编辑