HTML <option> id Attribute

The id attribute on an <option> tag assigns an identifier to the option element. The identifier must be unique across the page.

Example

#

A unique id attribute on each of the 5 <option> elements.

<select name="country">
  <option id="option-none" value="">-- Select Country --</option>
  <option id="option-us" value="us">United States</option>
  <option id="option-uk" value="uk">United Kingdom</option>
  <option id="option-fr" value="fr">France</option>
  <option id="option-it" value="it">Italy</option>
</select>

Using id

The id attribute assigns an identifier to the <option> element.

The identifier must be unique across the page.

The id allows programmatic access to the <option> element.

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


Syntax

<option id="identifier" />

Values

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Value Description
identifier A unique alphanumeric string. The id value must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens (-), underscores (_), colons (:), and periods (.).

More Examples

An id attribute on the second <option> tag.
Clicking the button will display the value of that option.


<select name="country">
  <option id="none" value="">-- Select Country --</option>
  <option id="us" value="us">United States</option>
  <option id="uk" value="uk">United Kingdom</option>
  <option id="fr" value="fr">France</option>
  <option id="it" value="it">Italy</option>
</select>

<br/>
<button onclick="show();">Show UK value</button>

<script>
  let show = () => {
    let element = document.getElementById("uk");
    alert("Value = " + element.value);
  }
</script>

Code explanation

The id attribute assigns a unique identifier for the <option> element.

Clicking the button calls JavaScript which locates the <option> using the id.

Finally, the value of the <option> is displayed in an alert box.


Browser support

Here is when id 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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