The class attribute assigns one or more classnames to the <audio> tag.
Classnames are defined in a stylesheet or in a local <style> element.
Classes, i.e. classnames, are used to style the audio element.
A class attribute styling an <audio> element.
This class creates the rounded border.
<style>
.audio-border {border:10px solid lightblue; border-radius:50px;}
</style>
<section>
<audio class="audio-border" controls>
<source src="/media/epic.mp3" type="audio/mpeg">
<source src="/media/epic.wav" type="audio/wav">
</audio>
</section>
Classes (i.e. classnames) are used for styling the audio 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.
<audio class="classnames">
| Value | Description |
|---|---|
| classnames | One or more space-separated class names. |
A class attribute styling an <audio> control.
Clicking the button toggles a classname which changes the border color.
<style>
.audio-border {
border: 10px solid lightblue;
border-radius: 50px;
}
.border-orange {
border-color: orangered;
}
</style>
<audio id="myaudio" class="audio-border" controls>
<source src="/media/epic.mp3" type="audio/mpeg">
<source src="/media/epic.wav" type="audio/wav">
</audio>
<br />
<button onclick="toggle();">Toggle class</button>
<script>
let toggle = () => {
let element = document.getElementById("myaudio");
element.classList.toggle("border-orange");
}
</script>
Two CSS classes are defined in the <style> section.
The class attribute in <audio> assigns one classname.
Repeatedly clicking the button toggles another class, changing the border color.
Here is when class support started for each browser:
 Chrome
|
4.0 | Jan 2010 |
 Firefox
|
3.5 | Jun 2009 |
 IE/Edge
|
9.0 | Sep 2012 |
 Opera
|
10.0 | Aug 2009 |
 Safari
|
11.5 | Jun 2009 |
