The class attribute assigns one or more classnames to the <textarea> tag.
Classnames are defined in a stylesheet or in a local <style> element.
Classes, i.e. classnames, are used to style elements.
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>
Classes (i.e. classnames) are used for styling the textarea 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.
<textarea class="classnames">
| Value | Description |
|---|---|
| classnames | One or more space-separated class names. |
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>
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>.
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 <textarea>
