Re: DOM Keyboard Event Level 3 questions about proposal

> But why the "code" values is so complicated?
>> For example: event.code='ShiftLeft'. If I need to detect the exactly
>> 'Shift' key, I can read 'location' property.
>>
> The location property designates things such as numpad, function row,
> center keys, I don't think shift left and right would have a different
> location (I could be wrong though).
>


>  In the most common scenarios I need to detect just 'Shift' key without
>> exactly location.
>>
> Yeah, but you wouldn't want to throw away the possibility of identifying
> left or right. Therefore it's not the same.
>

"DOM_KEY_LOCATION_LEFT
The key activated originated from the left key location (there is more than
one possible location for this key).
Example: the left 'Control' key on a PC 101 Key US keyboard.
...
DOM_KEY_LOCATION_RIGHT
The key activation originated from the right key location (there is more
than one possible location for this key).
Example: the right 'Shift' key on a PC 101 Key US keyboard." (from spec).

You can check "location" values in IE9+ or in Opera 12+ for "Shift" keys.
So for left "Shift" location would be DOM_KEY_LOCATION_LEFT, for right
"Shift" -  DOM_KEY_LOCATION_RIGHT.


>
>> Another example is event.code="Digit2". While I can understand
>> "ShiftLeft" value - it brings additional information, I can't understand
>> the "Digit"/"Key" prefix. There is no other "2" value in the spec, no need
>> to do the "code" values so complicated. Why can't it be just "2" as well as
>> "KeyA" be just "A"?
>>
> Because they're not "2" or "A", they might be  "ش" or "١" or "た". The
> name is choosen to designate that you're not dealing with alphanumerics
> here, but with key identifiers.
>
I don't see much differences between "KeyA" and "A" except of complication
of js-code writing. When the js-developer using "code" property he should
know that it's mean and that values it can contains. "Key"/"Digit" prefix
is useless and redundant, and requires to write more code. In "code"
property the "A" value can serve as unique key as well as "KeyA" value.