HTML and CSS Reference
In-Depth Information
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HTML5 Event Attributes
onabort, onblur, oncanplay, oncanplaythrough, onchange, onclick,
oncontextmenu, ondblclick, ondrag, ondragend, ondragenter, ondragleave,
ondragover, ondragstart, ondrop, ondurationchange, onemptied, onended,
onerror, onfocus, onformchange, onforminput, oninput, oninvalid, onkeydown,
onkeypress, onkeyup, onload, onloadeddata, onloadedmetadata, onloadstart,
onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, onmousewheel,
onpause, onplay, onplaying, onprogress, onratechange, onreadystatechange,
onscroll, onseeked, onseeking, onselect, onshow, onstalled, onsubmit,
onsuspend, ontimeupdate, onvolumechange, onwaiting
Events Defined by Internet Explorer
onlayoutcomplete, onlosecapture, onreadystatechange
Element-Specific Attributes
clear
This attribute forces the insertion of vertical space so that the tagged text can be
positioned with respect to images. A value of
left
clears text that flows around left-aligned
images to the next full left margin; a value of
right
clears text that flows around right-aligned
images to the next full right margin; and a value of
all
clears text until it can reach both full
margins. The default value according to the transitional HTML and XHTML specifications is
none
, but its meaning generally is supported as just introducing a return and nothing more.
The CSS
clear
property is preferred over using this attribute.
Examples
<p>
This text will be broken here
<br>
and continued on a new line.
</p>
<p>
XHTML
<br />
syntax!
</p>
<address>
PINT Inc.
<br>
2105 Garnet Ave
<br>
San Diego, CA 92109
<br>
</address>
Compatibility
HTML 2, 3.2, 4, 4.01, 5
XHTML 1.0, 1.1, Basic
Firefox 1+, Internet Explorer 2+,
Netscape 1+, Opera 2.1+, Safari 1+
Notes
• This is an empty element. A closing tag is illegal under all HTML specifications. For
XHTML compatibility, a closing slash is required:
<br />
.
• Under the strict (X)HTML specifications and HTML5, the
clear
attribute is not valid.
The CSS property
clear
provides the same functionality as the
clear
attribute.
