[whatwg] Additional onxxxx event attributes for DOM Level3 Events

[Garrett Smith]

On 11/30/10, Ian Hickson <ian at hixie.ch> wrote:
> On Mon, 16 Aug 2010, Hajime Morita wrote:
>>
>> I noticed that some events which are defined in DOM Level3 Events [1]
>> don't have
>> associated HTML attributes.
>> For example, "keypress" event has associated "onkeypress" attribute.
>> But "focusin" event doesn't have "onfocusin" attribute.
>>
It does in IE.

>> Here is a list:
>>
>> * wheel event
`onmousewheel`? That's in IE.

>> * textInput event

Following the convention of lc for event handler properties, `ontextinput`?

>> * focusin event
>> * focusout event

Those are in IE.

>> * compositionstart event
>> * compositionupdate event
>> * compositionend event
>> * DOMXxxx events
>>
>> I think these events should have associated attributes defined.
>> DOM mutation events might be better to skip due to its long name and rare
>> usage.
>> But it's just a preference and not a strong opinion.
>
> I'm happy to add new event handler attributes, but not to add them just
> based on completeness. New features are added based on either use cases
> (i.e. problems that authors or users are facing), or compatibility (i.e.
> things that browsers already do). If there are specific events for which
> event handler attributes would be useful, I encourage you to request those
> specifically, describing either the relevant use cases or citing the
> existing implementations, as appropriate.
>

The reason event handler properties are useful is that they can be
detected. A program can make a fair assessment as to whether the
element supports the event handler in question and how to handle the
case where that isn't supported.

That isn't possible with event target; there is no such,
`object.generatesEvent`, nor will there be in D3E, according its
author.

Garrett