//这种方式在特定环境下使用真实爽
var a = { n: {name:'whatever'} }; var b = JSON.parse( JSON.stringify(a) );
- 对继承了解还是不够 https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object/create
Rectangle.prototype = Object.create(Shape.prototype);
