js原型与原型链的详细理解

　　js中的对象分为两种：普通对象object和函数对象function。

  function fn1(){};  var fn2 = function(){};  var fn3 = new Function();  var fn4 = Function();  var obj1 = new fn1();  var obj2 = {};  var obj3 = new Object();  var obj4 = Object();  console.log(typeof fn1);//function  console.log(typeof fn2);//function  console.log(typeof fn3);//function  console.log(typeof fn4);//function  console.log(typeof obj1);//object  console.log(typeof obj2);//object  console.log(typeof obj3);//object  console.log(typeof obj4);//object

原标题：js原型与原型链的详细理解

关键词：JS