886559 - Calling hasOwnProperty('detail') on a CustomEvent that was instantiated with {detail: something} returns false

Status: RESOLVED INVALID

(Core :: DOM: Core & HTML, defect)

Description

[jordan.garcia]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36

Steps to reproduce:

var c = new CustomEvent('someEvent', {detail: 'bar'}); Object.prototype.hasOwnProperty.call(c, 'detail');


Actual results:

returns false


Expected results:

returns true

Comment 1

[Tiziana Sellitto [:tiziana]]

It seems to be similar to bug 879605

Comment 2

[Till Schneidereit [:till]]

It does, yes. Also reproducible with the simpler

var c = new CustomEvent('someEvent', {detail: 'bar'});
c.hasOwnProperty('detail');

Comment 3

[Olli Pettay [:smaug][[e-mail]]]

detail is a getter in the prototype object of CustomEvent, not in the event itself.
Blink and webkit tend to put properties to the object itself, not to the prototype as the
specs says.

Comment 4

[jordan.garcia]

Olli,

Could you please link to the part of the spec that mentions this.  I could not find it.

Thanks

Comment 5

[Olli Pettay [:smaug][[e-mail]]]

http://dev.w3.org/2006/webapi/WebIDL/#es-attributes