Feature request: Element innerHTML for IE11

[kapouer]

I recently found out that IE11 has HTMLElement innerHTML get and set:

Object.getOwnPropertyDescriptor(
  HTMLElement.prototype,
  'innerHTML'
);

but not Element.prototype:
https://developer.mozilla.org/en-US/docs/Web/API/Element/innerHTML

[JakeChampion]

This states that IE 4 and above have Element.prototype.innerHTML -- https://developer.mozilla.org/en-US/docs/Web/API/Element/innerHTML#Browser_compatibility

[kapouer]

In real IE11, tested on about:blank

Object.getOwnPropertyDescriptor(
 Element.prototype,
 'innerHTML'
);
undefined

I suppose the problem is getOwnPropertyDescriptor, then ? But what would be the correct way to obtain the descriptor ?

[kapouer]

Found out more info from this forum, to sum it up:

Microsoft created innerHTML, and the other browsers picked it up.

In IE, innerHTML doesn't behave the same was as in Firefox or Chrome. I was trying to mitigate that by modifying innerHTML directly.

For IE10, Object.getOwnPropertyDescriptor(Element.prototype, "innerHTML") was working, but Object.getOwnPropertyDescriptor(HTMLElement.prototype, "innerHTML") was not. (I think)
For IE11 it is the exact opposite..!

EDIT: IE10 behaves the same as IE11 (HTMLElement works, not Element)
EDIT2: other browsers return undefined for Object.getOwnPropertyDescriptor(HTMLElement.prototype, "innerHTML")

[kapouer]

if (!Object.getOwnPropertyDescriptor(Element.prototype, 'innerHTML')) {
  Object.defineProperty(
    Element.prototype,
    'innerHTML',
    Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'innerHTML')
  );
  // but here HTMLElement should not have a innerHTML property, how to remove it ?
}