[[Set]] and inherited readonly data properties

[Andrea Giammarchi]

For the sake of examples, I honestly find current V8 hack, tested in
node.js inconsistent, kinda pointless, and quite disturbing, with or
without strict code.

```javascript
function Class(value) {
  this.value = value;
}
Object.defineProperties(Class.prototype, {
  value:  {value: null},
  method: {value: Class}
});

var a = new Class(123);
a.value; // 123 ... why?

var b = Object.create(Class.prototype);
Class.call(b, 123);
b.method(123);

b.value; // null ... I mean ... **null**
```

Even worst when it comes to default values ...

```javascript
function A(value) {
  this.value = value;
}
Object.defineProperty(
  A.prototype,
  'value',
  {value: 0}
);

function B(value) {
  if (value) {
    // best of all .. it won't assign
    // and it won't throw neither
    // congrats?
    this.value = value;
  }
}
Object.defineProperty(
  B.prototype,
  'value',
  {value: 0}
);

var a = new A(123);
a.value; // 123
a.value = 456;
a.value; // 456

var b = new B;
b.value; // 0
b.value = 456;
b.value; // 0

var b = new B(123);
b.value; // 0
b.value = 456;
b.value; // 0
```

Why JavaScript engines need so much fragmentation with these kind of
unspeced behavior ... this, as a developer, I've never got it.

Best Regards



On Thu, Mar 27, 2014 at 10:28 AM, Andrea Giammarchi <
andrea.giammarchi at gmail.com> wrote:

> I know it won't get updated any time soon but unfortunately, and specially
> in some emerging market, [these kind of phones](
> http://www.amazon.com/LG-Navigation-OPTIMUS-ME-BLK/dp/B005HEEBQI/ref=sr_1_62?s=electronics&ie=UTF8&qid=1395940823&sr=1-62&keywords=android+phone)
> are still quite common ... you guys should speed up spreading FirefoxOS on
> $25 deals !!!
>
> Anyway, I was just saying Android 2.x is like the IE6 of these days, IMO
> ... and I am not sure it will go away any time soon.
>
> Best Regards
>
>
> On Wed, Mar 26, 2014 at 11:36 PM, Brendan Eich <brendan at mozilla.org>wrote:
>
>> Andrea Giammarchi wrote:
>>
>>> on Android 2.3.6 (or lower) you can [try this page](http://www.3site.eu/
>>> jstests/configurable.html) which will show an alert like
>>>
>>> ```
>>>
>>> Sorry for the initial false alarm, at least I am sure few didn't know
>>> about the getters and setters bug in actually quite recent Android 2
>>> browsers.
>>>
>>
>> Android 2.3 (Gingerbread) may be quite recent on a lower-end phone, but
>> it is incredibly out of date and not being maintained. Especially its old
>> WebKit fork. V8 was backported, but that was in 2010 -- pretty sure it is
>> not patched up to anywhere near current level.
>>
>> http://en.wikipedia.org/wiki/Android_version_history#
>> Android_2.2.E2.80.932.2.3_Froyo_.28API_level_8.29
>>
>> /be
>>
>
>
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