[whatwg] Should editable elements have placeholder attribute?

[Ojan Vafai]

On Wed, May 2, 2012 at 10:08 AM, Ryosuke Niwa <rniwa at webkit.org> wrote:

> On Wed, May 2, 2012 at 10:06 AM, Ojan Vafai <ojan at chromium.org> wrote:
>
>> I'm OK with having when the placeholder is displayed be up to the UA. I
>> can see that being platform specific.
>>
>> But, we should spec when content is eligible for showing a placeholder
>> (i.e. we should define what "looks empty" means). I don't see any benefit
>> in browsers behaving differently here. This part is not platform-specific.
>> It's just hard to figure out how to spec it.
>>
>
> Maybe when element.innerText or element.textContent is empty?
>

textContent will strip a bunch of visible content (images, iframes, embeds,
etc.).

Another edge case to consider:
<div contentEditable placeholder=foo><div
style="background-color:red;width:100px;height:100px"></div></div>