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HTML5 aside element

The aside element allows you to 'put aside' (figuratively speaking) less relevant content from the relevant content.

Aside element creates a section (potentially has a heading = its own outline).

About aside

is an optional element
multiple aside elements allowed per HTML5 document

Display & support aside

display in browser »details
display type: block

₉₊

Parents, children aside

aside nested within elements »aside parents
elements nested within aside »aside children
»examples

Attributes aside

required: none
optional: global attributes, event attributes

Syntax aside

1	<aside> ... <⁄aside> »example

Attributes and Values aside (comma separated)

<aside	attribute	=	"attribute_value(s)"	Video	Examples
1. specific attributes
	All Specific Attributes
2. global attributes
1.	accesskey	=	keyboard key	»img	<aside accesskey="h"> ... </aside>
2.	class	=	class name	»html »img	<aside class="class_name"> ... </aside>
3.	contenteditable	=	"", , true, false	»html	<aside contenteditable="true"> ... </aside>
4.	contextmenu	=	menu id value	»html	<aside contextmenu="menu_id_value"> ... </aside>
5.	data-*	=	value	-	<aside data-http-error="404"> ... </aside>
6.	dir	=	ltr, rtl, auto	»html	<aside dir="ltr"> ... </aside>
7.	draggable	=	true, , false	»img	<aside draggable="false"> ... </aside>
8.	dropzone	=	copy, move, link, string:, file:	-	<aside dropzone="copy"> ... </aside>
9.	hidden	=	"", , hidden	»html »img	<aside hidden="hidden"> ... </aside>
10.	id	=	id name	»html »img	<aside id="unique_id_name"> ... </aside>
11.	itemid	=	URL	-	-
12.	itemprop	=	string	»link »a	-
13.	itemref	=	string	-	-
14.	itemscope	=	"", , itemscope	-	-
15.	itemtype	=	absolute URL	-	-
16.	lang	=	language code	»html »head »title »img	<aside lang="en"> ... </aside>
17.	spellcheck	=	"", , true, false	»html	<aside spellcheck="true"> ... </aside>
18.	style	=	CSS property:value	»html »img	<aside style="color:red"> ... </aside>
19.	tabindex	=	integer	»img	<aside tabindex="3"> ... </aside>
20.	title	=	text	»html »link »style »abbr »dfn »img »meter	<aside title="html page"> ... </aside>
21.	translate	=	"", yes, no	»html »img	<aside translate="yes"> ... </aside>
	All Global Attributes
3. global event attributes
1.	onclick	=	script	» list	<element onclick="script" > ...
2.	ondblclick	=	script	» list	<element ondblclick="script" > ...
	All Event Attributes

For more information about the aside element, please see the specs: W3C ⁄ WHATWG