function Person () { } // //p ----> Person.prototype ----> Object.prototype ----> null // var p = new Person(); // console.log(p instanceof Person);//true // console.log(p instanceof Object);//true //Object構造函數對象 ----> Function.prototype -----> Object.prototype --->null console.log(Object instanceof Object);//true console.log(Object instanceof Function);//true //Function構造函數對象 ----> Function.prototype ----- > Object.prototype --->null console.log(Function instanceof Function);//true console.log(Function instanceof Object);//true