Missing jQuery's hide() functionality

[DartBot]

This issue was originally filed by @sethladd

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If dart:html is supposed to be the jQuery for Dart, we're missing quite a lot. I just answered http://stackoverflow.com/questions/13223840/dart-js-interop-callbacks which wanted to hide().

Here is the doc for hide(): http://api.jquery.com/hide/

Bigger question, do we want to sweep through jQuery and catalogue what we want to add to dart:html ?

[DartBot]

This comment was originally written by @a14n

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For that functionnality, what about using a "visible" property. Something like :

class Element {
bool get visible => style.display != 'none';
set visible(bool visible) => style.display = visible ? '' : 'none';
}

[DartBot]

This comment was originally written by kaisellgren@gmail.com

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We might also want to consider a toggle() method as well, which checks the visibility and hides / shows accordingly.

Also, hiding and showing can be achieved either by changing visibility or entirely collapsing the element. I suppose collapsing is the default behavior we should use and possibly provide a parameter to specify the other way.

[sethladd]

Removed Type-Defect label.
Added Type-Enhancement, Area-HTML, Triaged labels.

[efortuna]

Added this to the Later milestone.

[DartBot]

This comment was originally written by amouravski@google.com

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Added Duplicate label.
Marked as being merged into #8376.

[DartBot]

This comment was originally written by Ben.Tre...@gmail.com

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The Element.hidden property does not work in IE9. Are we going to stand there pointing at IE or are we going to shim it?

[blois]

I opened bug 9900 for the Element.hidden property.