The class attribute assigns one or more classnames to the <blockquote> tag.
Classnames are defined in a stylesheet or in a local <style> element.
Classes, i.e. classnames, are used to style the blockquote element.
A class attribute styling a <blockquote> element.
And so, my fellow Americans: ask not what your country can do for you – ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man.-- President Kennedy, 1961, Inaugural address.
<style>
.blue-edge {border-left:4px solid lightblue; padding-left: 15px;}
</style>
<article>
<blockquote class="blue-edge">
And so, my fellow Americans: ask not what your country
can do for you – ask what you can do for your country.
My fellow citizens of the world: ask not what America
will do for you, but what together we can do for the
freedom of man.
</blockquote>
-- President Kennedy, 1961, Inaugural address.
</article>
Classes (i.e. classnames) are used for styling the blockquote 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.
<blockquote class="classnames" >
| Value | Description |
|---|---|
| classnames | One or more space-separated class names. |
A class attribute styling a <blockquote> tag.
Clicking the button toggles a classname that changes the border color.
And so, my fellow Americans: ask not what your country can do for you – ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man.-- President Kennedy, 1961, Inaugural address.
<style>
.blue-edge { border-left: 4px solid lightblue; padding-left: 15px; }
.red-edge { border-color: orangered; }
</style>
<article>
<blockquote class="blue-edge" id="kennedyquote">
And so, my fellow Americans: ask not what your country
can do for you – ask what you can do for your country.
My fellow citizens of the world: ask not what America
will do for you, but what together we can do for the
freedom of man.
</blockquote>
-- President Kennedy, 1961, Inaugural address.
</article>
<br /><br />
<button onclick="toggle();">Toggle class</button>
<script>
let toggle = () => {
let element = document.getElementById("kennedyquote");
element.classList.toggle("red-edge");
}
</script>
Two CSS classes are defined in the <style> element.
The class attribute in <blockquote> assigns one classname.
Clicking the button toggles the second classname, changing the border color.
Here is when class 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 |
Back to <blockquote>
