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HTML <acronym> Tag

Example

The marked acronyms are as follows:


Browser Support

All major browsers support the <acronym> tag.

Note: Internet Explorer 5.5 and earlier versions do not support the <acronym> tag.


Tag Definition and Usage

The <acronym> tag defines an acronym.

If the acronym is a word, it can be pronounced, such as NATO, NASA, ASAP, GUI.

By marking the acronyms, you provide useful information for browsers, spell checkers, translation systems, and search engine indexers.


Tips and Notes

Tip: In some browsers, when you hover the mouse over an acronym with the <acronym> tag, the title attribute of the <acronym> tag can be used to display the full version of the acronym.


Differences Between HTML 4.01 and HTML5

HTML5 does not support the <acronym> tag, while HTML 4.01 supports it.


Standard Attributes

In HTML 4.01, the <acronym> tag supports the following standard attributes:

Attribute Value Description
class classname Specifies the class name for an element
dir rtl <br>ltr Specifies the text direction of the element's content
id id Specifies a unique id for an element
lang language_code Specifies the language of the element's content
style style_definition Specifies an inline style for an element
title text Specifies extra information about an element
xml:lang language_code Specifies the language of the element's content in an XHTML document

For a complete description, visit Standard Attributes.


Event Attributes

In HTML 4.01, the <acronym> tag supports the following event attributes:

Attribute Value Description
onclick script Script to be run on a mouse click
ondblclick script Script to be run on a double-mouse click
onmousedown script Script to be run when a mouse button is pressed
onmousemove script Script to be run when the mouse pointer moves
onmouseout script Script to be run when the mouse pointer moves out of an element
onmouseover script Script to be run when the mouse pointer moves over an element
onmouseup script Script to be run when a mouse button is released
onkeydown script Script to be run when a key is pressed
onkeypress script Script to be run when a key is pressed and then released
onkeyup script Script to be run when a key is released

For a complete description, visit Event Attributes.

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