This element allows authors to clearly indicate a sequence of characters that define an abbreviation for a word (such as Mr. instead of Mister, Calif instead of California).
dir="ltr | rtl"
id="unique alphanumeric identifier"
onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup
<abbr title="California abbreviated">Calif</abbr>
Isn't <abbr>WWW</abbr> an acronym? Are you sure?
HTML 4, 4.01, XHTML 1.0, 1.1, Basic
Netscape 6, 7
Opera 6, 7
This tag is commonly confused with <acronym>. Debate about just what constitutes an acronym as compared with an abbreviation is common amongst very detail-oriented Web standards experts. In reality,Web developers appear to use the <acronym> tag more often than the <abbr> tag.
With the title attribute set on this element, Opera and Mozilla may render a dotted underline useful to suggest the Tooltip that might contain a definition for the word.
Because there is typically no markup-oriented presentation for this element, it is primarily used in conjunction with style sheets and scripts.