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function F(){} function A(){} F.prototype = A; console.log(new F()) //F {} console.log(new F().prototype) //A {}
为什么new F().prototype 会是 A{}new 不是应该把new F().__proto__指向F.prototype吗继承看的云里雾里是否有什么好的文章推荐呢
ringa_lee
new F().prototype === (new F()).prototype而不是new (F().prototype)，如果是new F.prototype，才是new (F.prototype)。new 是把new F().__proto__指向F.prototype，F.prototype = A;你把F.prototype指向了A构造器了，所以是有prototype属性的。new F().prototype === new F().__proto__.prototype
new F().prototype === (new F()).prototype
new (F().prototype)
new F.prototype
new (F.prototype)
new
new F().__proto__
F.prototype
F.prototype = A;
A
prototype
new F().prototype === new F().__proto__.prototype
F.prototype 不就是 A 了么 ..
http://bonsaiden.github.io/Ja...
Chrome 下面和你的打印结果不太一样啊
function F(){} function A(){} F.prototype = A; console.log(new F()) //F {} console.log(new F().prototype) //Object {} console.log(new F().__proto__) //A{}
推荐阅读： http://blog.jobbole.com/66441/
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
new F().prototype === (new F()).prototype而不是new (F().prototype)，如果是new F.prototype，才是new (F.prototype)。new是把new F().__proto__指向F.prototype，F.prototype = A;你把F.prototype指向了A构造器了，所以是有prototype属性的。new F().prototype === new F().__proto__.prototypeF.prototype 不就是 A 了么 ..
http://bonsaiden.github.io/Ja...
Chrome 下面和你的打印结果不太一样啊
推荐阅读： http://blog.jobbole.com/66441/