HTML <select> class Attribute

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

Example

#

A class attribute styling a <select> element.

<style>
  .select {
    padding: 10px;
    width: 200px;
    font-size:16px;
    border: 0;
    border-bottom: 3px solid teal;
  }
</style>

<select class="select">
  <option value="">-- Select city -- </option>
  <option value="paris">Paris</option>
  <option value="london">London</option>
  <option value="athens">Athens</option>
  <option value="madrid">Madrid</option>
</select>

Using class

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

Multiple classnames are separated by a space.

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

<select class="classnames">

Values

#

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

More Examples

A class attribute styling a <select> element.
Clicking the button toggles a classname that changes background and text colors.



<style>
  .select-bordered {
    padding: 10px;
    width: 200px;
    font-size:16px;
    border: 0;
    border-bottom: 3px solid teal;
  }
  .select-underline {
    border-color: orangered;
  }
</style>

<select id="myselect" class="select-bordered">
  <option value="">-- Select city -- </option>
  <option value="paris">Paris</option>
  <option value="london">London</option>
  <option value="athens">Athens</option>
  <option value="madrid">Madrid</option>
</select>

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

<script>
  let toggle = () => {
     let element = document.getElementById("myselect");
     element.classList.toggle("select-underline");
  }
</script>

Code explanation

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

The class attribute in <select> assigns one classname.

Repeatedly clicking the button toggles another class, changing the select background and text color.


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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