HTML <textarea> class Attribute

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

Example

#

A class attribute styling a <textarea> element.

<style>
  .textarea {
    width: 350px;
    height: 150px;
    padding: 10px;
    border: 4px dashed #b91c1c;
  }
</style>

<textarea class="textarea" placeholder="Enter your message here..."></textarea>

Using class

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

Multiple classnames are separated by a space.

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

<textarea class="classnames">

Values

#

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

More Examples

A class attribute styling a <textarea> element.
Clicking the button toggles a classname that changes the border color.


<style>
  .textarea {
    width: 350px;
    height: 150px;
    padding: 10px;
    border: 4px dashed #b91c1c;
  }
  .border-indigo{ border-color: #4238ca; }
</style>

<textarea class="textarea" id="mytextarea"
          placeholder="Enter your message here..."></textarea>

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

<script>
  let toggle = () => {
     let element = document.getElementById("mytextarea");
     element.classList.toggle("border-indigo");
  }
</script>

Code explanation

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

The class attribute in <textarea> assigns one classname.

Repeatedly clicking the button toggles another class, changing the size of the <textarea>.


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

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