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HTML for HVAC Acronym

when HVAC means Heating, Ventilation and Air Conditioning

New! Now updated with the inheritance rules for the title attribute in HTML 5

The easiest way to create HTML code indicating that the acronym HVAC stands for Heating, Ventilation and Air Conditioning is to simply include the acronym in an HTML <a> tag and an abbreviation tag (not an acronym tag):

<a href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" title="Heating, Ventilation and Air Conditioning"
onclick="if (confirm('HVAC stands for Heating, Ventilation and Air Conditioning')) return false;"
>
<abbr>HVAC</abbr>
</a>

This is the recommended code for both HTML 4 browsers and HTML 5 browsers. Some browsers, most notably IE, do not activate help when the title attribute is coded on the <abbr> tag, but they do work as expected for titles on the <a> tag. The <abbr> tag inherits its title attribute from the parent <a> tag.

If you are creating HTML code for the definition of Heating, Ventilation and Air Conditioning, the meaning of the acronym HVAC, then include a <dfn> definition tag around the <abbr> abbreviation tag and follow the entire HTML code for the hypertext link with the definition of the term:

<p>A <a href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" title="Heating, Ventilation and Air Conditioning"
onclick="if (confirm('HVAC stands for Heating, Ventilation and Air Conditioning')) return false;"
>
<dfn><abbr title="Heating, Ventilation and Air Conditioning">HVAC</abbr>
</a> is ...(definition of Heating, Ventilation and Air Conditioning)....</p>

The <dfn> tag gets the term being defined from the title attribute of the <abbr> tag. The result should look like this (hovering your mouse over the HVAC acronym shows the expanded meaning of the acronym):

A HVAC is ...(definition of "Heating, Ventilation and Air Conditioning")....

If you are creating HTML code that simply expands the acronym then indicate that it is the HVAC acronymn which is being defined using an HTML <dfn> tag with a title attribute around the <abbr> tag and follow the HTML for the hypertext link with the acronym definition:

<p>When we use the acronym <a href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" title="Heating, Ventilation and Air Conditioning"
onclick="if (confirm('HVAC stands for Heating, Ventilation and Air Conditioning')) return false;"
>
<dfn title="HVAC"><abbr title="Heating, Ventilation and Air Conditioning">HVAC</abbr></dfn>
</a> it is the abbreviation for Heating, Ventilation and Air Conditioning.</p>

The result should look like this (hovering your mouse over the HVAC acronym shows the definition):

When we use the acronym HVAC it is the abbreviation for Heating, Ventilation and Air Conditioning.

Acronym Vocabulary URI Declaration

For the remaining examples, the Acronym Vocabulary namespace URI needs to be declared for use with element tag names and attribute values. For an HTML web page, the beginning of the file should look like this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html [
<!ENTITY at "http://Acronyms.net/terms/">
<!ENTITY av "http://Acronyms.net/vocabulary/">
]>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:av="&av;">
<head>
<style type="text/css">
.hide { display: none }
</style>
...

This only needs to be done once per document file.

XLink simple link

First, declare the vocabulary as shown above. Then, add acronyms as follows:

<a href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" title="Heating, Ventilation and Air Conditioning"
xlink:type="simple"
xlink:href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/"
xlink:arcrole="&av;definedAt"
xlink:role="&av;definition"
xlink:title="Heating, Ventilation and Air Conditioning"
xlink:show="new"
xlink:actuate="onRequest"
>
<abbr
xlink:type="simple"
xlink:href="&at;Heating-Ventilation-and-Air-Conditioning"
xlink:arcrole="&av;standsFor"
xlink:role="&av;term"
xlink:title="HVAC - Heating, Ventilation and Air Conditioning"
xlink:show="new"
xlink:actuate="onRequest"
>HVAC</abbr></dfn>
</a>

XLink extended link

First, declare the vocabulary as shown above. Then, add acronyms as follows:

<a xlink:type="extended" href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" title="Heating, Ventilation and Air Conditioning">
<abbr xlink:type="resource" xlink:label="acronym">HVAC</abbr>
<span class="hide" xlink:type="resource" xlink:label="verbal" xlink:title="pronunciation">h v a c</span>
<span class="hide" xlink:type="resource" xlink:label="expand" xlink:title="expansion">Heating, Ventilation and Air Conditioning</span>
<span class="hide" xlink:type="locator" xlink:label="term" xlink:role="&av;term" xlink:href="&at;Heating-Ventilation-and-Air-Conditioning" xlink:title="Heating, Ventilation and Air Conditioning"/>
<span class="hide" xlink:type="locator" xlink:label="definition" xlink:role="&av;definition" xlink:href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" xlink:title="Heating, Ventilation and Air Conditioning"/>
<span class="hide" xlink:type="locator" xlink:label="finder" xlink:role="&av;reference" xlink:href="http://www.Acronyms.net/reference/h/HVAC#Heating-Ventilation-and-Air-Conditioning" xlink:title="HVAC - Heating, Ventilation and Air Conditioning"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;pronounceAs" xlink:to="verbal" xlink:actuate="onLoad"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;expandsTo" xlink:to="expand"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;standsFor" xlink:to="term"/>
<span class="hide" xlink:type="arc" xlink:from="term" xlink:arcrole="&av;definedAt" xlink:to="definition" xlink:show="new" xlink:actuate="onRequest"/>
<span class="hide" xlink:type="arc" xlink:from="acronym" xlink:arcrole="&av;foundAt" xlink:to="finder" xlink:show="new" xlink:actuate="onRequest"/>
</a>

embedded RDF metadata

First, declare the vocabulary as shown above. Then, add acronyms as follows:

<a href="http://www.Acronyms.net/terms/h/Heating-Ventilation-and-Air-Conditioning/" title="Heating, Ventilation and Air Conditioning">
<abbr>HVAC</abbr>
</a>

Printer-friendly PDF* format:

Heating, Ventilation and Air Conditioning

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