Nuances of JavaScript Prototyping

Question

In Chrome when i'm doing this:

 var A = function(){};
 A.prototype =  { a:1,b:2 };
 var aInst = new A;
 aInst.a = 11;
 console.log(aInst);

I see this in console:

enter image description here

I didn't see Objects with two properties with the same name ("a") before, something wrong with my Chrome?

That's a good question, but can you please pick non-infantile variable names? — Kobi, Sep 29 '13 at 12:03
There is a difference between instance members and prototype members: http://stackoverflow.com/a/16063711/1641941 — HMR, Sep 29 '13 at 12:15

score 2 · Accepted Answer · answered Sep 29 '13 at 12:03

2

One a is an instance property, the other is a value of the prototype object.

I'm actually seeing this in Chrome:

enter image description here

answered Sep 29 '13 at 12:03

Matt Zeunert

i know it , but why chrome sometimes displaying it in a "wrong" way? – Ivan Chernykh Sep 29 '13 at 12:15
@Cherniv yes, it's a bug. – mash Sep 29 '13 at 12:17

1 Answers1