如何访问变量内部值的原型

Question

I'm trying to access prototype for a value in variable.
For example :

var myObjVar = {name : 's'};
var x = "myObjVar";

Here how to access prototype of myObjVar using x ?

Its possible to access myObjVar.prototype

But I need to access through x ?

Answer 1

一个双重丑陋的解决方案是使用eval和非标准的__proto__属性：

eval(x).__proto__

Answer 2

Assuming that the object belongs to global scope:

window["myObjVar"].constructor.prototype

Otherwise use eval() (NOT RECOMMENDED!):

eval("myObjVar").constructor.prototype