On Apr 11, 2013, at 9:32 AM, Boris Zbarsky wrote:
> On 4/11/13 12:23 PM, Allen Wirfs-Brock wrote:
>> So why don't you make "register" a static method on HTMLElement and then
>> define the <element> semantics so it automatically does:
>> MyElement.register()
>>
>> This would normally invoke the inherited static method
>
> I lost track of something here. Why would it do that? Does MyElement have
> Element on its proto chain? MyElement.prototype certainly has
> Element.prototype on _its_ proto chain, but that's a separate concern from
> what happens with the interface objects... Is this something that ES6
> classes define differently from current WebIDL and implementations, and if
> so, do we need to align the two somehow?
Yes ES6 has "class-side" inheritance. The ES5 equivalent for:
class Sub extends Super {
constructor() {/*constructor body */ }
method1 () {}
static method2 {}
}
is:
function Sub() {/*constructor body */ }
Sub.__proto__ = Super;
Sub.prototype = Object.create(Super.prototype);
Sub.prototype.method1 = function method1() {};
Sub.method2 = function method2 () {};
Sub.foo looks first looks for a own property on Sub, then on Super, etc.
Allen
