The class attribute assigns one or more classnames to the <address> tag.
Classnames are defined in a stylesheet or in a local <style> element.
Classes, i.e. classnames, are used for styling the address element.
A class attribute styling an <address> element.
<style>
.blue-address { border: 3px dashed lightblue; background: aliceblue; padding: 20px 10px; }
</style>
<address class="blue-address">
Contact author: <a href="mailto:debbie@company.com">Debbie Anderson</a>,
@debbie_anderson
</address>
Classes (i.e. classnames) are used for styling the address element.
Multiple classnames are separated by a space.
JavaScript uses classes to access elements by classname.
Tip: class is a global attribute that can be applied to any HTML element.
<address class="classnames">
| Value | Description |
|---|---|
| classnames | One or more space-separated class names. |
A class attribute styling an <address>.
Clicking the button toggles a classname that changes the border.
<style>
.blue-addr{ border: 4px solid lightblue; background: aliceblue; padding: 20px 10px; }
.rose-border { border: 4px dashed #f45d49; }
</style>
<address class="blue-addr" id="myaddress">
Contact author: <a href="mailto:debbie@company.com">Debbie Anderson</a>,
@debbie_anderson
</address>
<button onclick="toggle();">Toggle class</button>
<script>
let toggle = () => {
let element = document.getElementById("myaddress");
element.classList.toggle("rose-border");
}
</script>
Two CSS classes are defined in the <style> element.
The first classname is assigned to the <address> element.
Clicking the button toggles another class, changing the border color.
Here is when data-* support started for each browser:
 Chrome
|
1.0 | Sep 2008 |
 Firefox
|
1.0 | Sep 2002 |
 IE/Edge
|
1.0 | Aug 1995 |
 Opera
|
1.0 | Jan 2006 |
 Safari
|
1.0 | Jan 2003 |
