HTML and CSS Reference
In-Depth Information
Events Defined by Internet Explorer
onactivate, onafterupdate, onbeforeactivate, onbeforecut, onbeforedeactivate,
onbeforeeditfocus, onbeforepaste, onbeforeupdate, onblur, onchange,
onclick, oncontextmenu, oncontrolselect, oncut, ondblclick, ondeactivate,
ondragenter, ondragleave, ondragover, ondrop, onerrorupdate, onfocus,
onfocusin, onfocusout, onhelp, onkeydown, onkeypress, onkeyup, onlosecapture,
onmousedown, onmouseenter, onmouseleave, onmouseover, onmouseout, onmouseup,
onmousewheel, onmove, onmoveend, onmovestart, onpaste, onpropertychange,
onreadystatechange, onresize, onresizeend, onresizestart, onselectstart
Element-Specific Attributes
align
This Microsoft-specific attribute controls the alignment of the image with respect to
the content on the page. The default value is
left
, but other values such as
absbottom
,
absmiddle
,
baseline
,
bottom
,
middle
,
right
,
texttop
, and
top
also might be
supported. The meaning of these values should be similar to those used for inserted objects,
such as images.
autofocus
This HTML5 Boolean attribute is used to indicate that the user agent should
immediately focus this form item once its containing window object (usually the document)
is made active. It only takes an attribute value of
autofocus
when using the XML-style
syntax for HTML5.
disabled
This attribute is used to turn off a form control. Elements will not be submitted,
nor can they receive any focus from the keyboard or mouse. Disabled form controls will not
be part of the tabbing order. The browser also can gray out the form that is disabled, to
indicate to the user that the form control is inactive. This attribute requires no value under
traditional HTML, but under XHTML variants it should be set to
disabled
.
form
This HTML5 attribute should be set to a string that corresponds to the
id
of the form
element that the button is associated with. This allows form elements in one form to trigger
actions in others.
multiple
This attribute allows the selection of multiple items in the selection list. The
default is single-item selection. Under XHTML, this attribute must have its value set to
multiple
.
name
This attribute allows a form control to be assigned a name for defining the name/
value pair used in form submission. Traditionally, these values were used by scripting
languages as well, though the standards encourage the use of the
id
attribute. For
compatibility purposes, both might have to be used.
size
This attribute sets the number of visible items in the selection list. When the
multiple
attribute is not present, only one entry should show; however, when
multiple
is present,
this attribute is useful for setting the size of the scrolling list box.
tabindex
This attribute takes a numeric value indicating the position of the form control
in the tabbing index for the form. Tabbing proceeds from the lowest positive
tabindex
value to the highest. Negative values for
tabindex
will leave the form control out of the
