How to get textarea HTML AND value?

I'd like to get the outer HTML and the inner value for a textarea element.

So, say I have the text "Lorem Ipsum" in a textarea, like so:

<textarea id="thing">Lorem Ipsum</textarea>

and I try to get it with the following:

textarea = document.getElementById('thing');
textareaNode = new CKEDITOR.dom.element(textarea);
textareaNode.getOuterHtml(); // Returns '<textarea id="thing"></textarea>'
textareaNode.getValue(); // Returns 'Lorem Ipsum'

​Is there a good way to get the entire textarea HTML with the enclosed value? Ideally, I'd like to get the following:

<textarea id="thing">Lorem Ipsum</textarea>

If I've overlooked something as easy as

textareaNode.getHtmlWithValue()

or something like that, I apologize and please point me to it.

Thanks!