HTML and CSS Reference
Events Defined by Internet Explorer
onactivate, onbeforedeactivate, onbeforeeditfocus, onblur, onclick,
oncontrolselect, ondblclick, ondeactivate, ondrag, ondragend, ondragenter,
ondragleave, ondragover, ondragstart, ondrop, onfocus, onhelp, onkeydown,
onkeypress, onkeyup, onlosecapture, onmousedown, onmouseenter, onmouseleave,
onmousemove, onmouseout, onmouseover, onmouseup, onmove, onmoveend,
onmovestart, onreadystatechange, onresizeend, onresizestart, onselectstart
<p><abbr title="California"> Calif </abbr></p>
<p> Isn't <abbr> WWW </abbr> an acronym? Oh what trouble! </p>
HTML 4, 4.01, 5
XHTML 1.0, 1.1, Basic
Firefox 1+, Internet Explorer 7+,
Netscape 6+, Opera 6+, Safari 1+
• This tag is commonly confused with <acronym> . Debate about just what constitutes
an acronym as compared with an abbreviation is common among very detail-oriented
Web standards experts. While Web developers appear to use an <acronym> tag more
often than an <abbr> tag, the former is deprecated under HTML5! The confusion
• When the title attribute is set on this element, browsers may render a dotted
underline, which is useful to indicate the presence of a tooltip that might contain the
expansion for the abbreviation.
• According to the HTML5 specification, the title attribute should be set to the
expansion of the abbreviation.
• The disabled attribute is not currently documented for this element at MSDN,
though it continues to work in Internet Explorer browsers.
• The MSDN documentation for this element may have errors regarding the extent of
its event support, because many events that are not listed as supported actually
worked when tested.
• Because there is typically no markup-oriented presentation for this element, it is
primarily used in conjunction with style sheets and scripts.
This element allows authors to clearly indicate a sequence of characters that composes an
acronym (XML, WWW, and so on).