[whatwg] Proposal: Add window.getLastError (or modify invocation arguments of window.onerror)

[Elliott Sprehn]

Can we just add a new event that takes an event object instead of a huge
list of arguments? :)


On Fri, Jul 12, 2013 at 11:30 AM, James Greene <james.m.greene at gmail.com>wrote:

> I'd rather get an Error-like duck-typed object with this shell info for
> cross-domain requests than to not get a real Error object when the
> unhandled error *is* from the same origin.
>
> Adding the trace as another new argument to `window.onerror` is certainly
> an option but the parameter list is getting long and I suspect that Error
> prototypes may still gain additional properties in the future.  Continuing
> down this path of adding more parameters rather than just passing an Error
> instance or Error-like object (or providing a separate supplemental method
> like `window.getLastError()` seems like one of those decisions that might
> results in infinite sadness in the future.
>
> Sincerely,
>     James Greene
>
>
>
> On Mon, Mar 11, 2013 at 5:50 AM, Simon Pieters <simonp at opera.com> wrote:
>
>> On Tue, 05 Feb 2013 08:20:27 +0100, Elliott Sprehn <esprehn at chromium.org>
>> wrote:
>>
>>  On Mon, Feb 4, 2013 at 5:44 PM, Oliver Hunt <oliver at apple.com> wrote:
>>>
>>>  ...
>>>> That's tricky - what is your "stack trace"?  You can very easily end up
>>>> leaking private information across frames.
>>>>
>>>>
>>>>  window.onerror is triggered across non-same origin frames?
>>>
>>
>> Yes, but always with these arguments:
>>
>> "Script error.", "", 0, 0
>>
>> --
>> Simon Pieters
>> Opera Software
>>
>
>