HTML <samp> class Attribute

The class attribute on a <samp> tag assigns one or more classnames to the sample element. Classes are used to style elements. Classnames are defined in a stylesheet or in a local <style> element.

Example

#

A class attribute styling a <samp> element.

The program ran for 3.5 minutes. Here is the output:

*** The first 50 digits of pi are: 3.1415926535 8979323846 2643383279 5028841971 6939937510 ***
<style>
  .samp-class { color: teal; }
</style>

<p>The program ran for 3.5 minutes. Here is the output:</p>
<samp class="samp-class"> 
   ***  The first 50 digits of pi are: 3.1415926535 8979323846 
            2643383279 5028841971 6939937510 *** 
</samp>

Using class

The class attribute assigns one or more classnames to the <samp> tag.

Multiple classnames are separated by a space.

Classes (i.e. classnames) are used for styling the samp element.

JavaScript uses classes to access one or more elements by classname.

Tip:  class is a global attribute that can be applied to any HTML element.


Syntax

<samp class="classnames">

Values

#

Value Description
classnames One or more space-separated class names.

More Examples

A class attribute styling a <samp> element.
Clicking the button toggles a classname that boldens the sample text.

The program ran for 3.5 minutes. Here is the output:

*** The first 50 digits of pi are: 3.1415926535 8979323846 2643383279 5028841971 6939937510 ***
<style>
  .teal { color: teal; }
  .bold { font-weight:700; }
</style>

<p>The program ran for 3.5 minutes. Here is the output:</p>
<samp class="teal" id="mysamp"> 
   ***  The first 50 digits of pi are: 3.1415926535 8979323846 
            2643383279 5028841971 6939937510 *** 
</samp>

<br />
<button onclick="toggle();">Toggle class</button>

<script>
  let toggle = () => {
    let element = document.getElementById("mysamp");
    element.classList.toggle("bold");
  }
</script>

Code explanation

Two CSS classes are defined in the <style> element.

The class attribute in <samp> assigns one classname.

Repeatedly clicking the button adds and removes the second class, toggling the boldness of the <samp>.


Browser support

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

You may also like

 Back to <samp>
Guides