HTML <li> id Attribute

The id attribute on a <li> tag assigns an identifier to the list item element. The identifier must be unique across the page.

Example

#

An id attribute on 3 <li> elements.

  1. Designers
  2. Developers
  3. Managers
<ol>
  <li id="designers">Designers</li>
  <li id="developers">Developers</li>
  <li id="managers">Managers</li>
</ol>

Using id

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

The identifier must be unique across the page.

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

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


Syntax

<li id="identifier" />

Values

#

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 first <li> element.
Clicking the button will display the text of the first list item.

  1. Designers
  2. Developers
  3. Managers

<ol>
  <li id="myli">Designers</li>
  <li>Developers</li>
  <li>Managers</li>
</ol>
  
<br />
<button onclick="show();">Show first item</button>

<script>
  let show = () => {
    let element = document.getElementById("myli");
    alert("Item = " + element.innerHTML);
  }
</script>

Code explanation

The id attribute assigns a unique identifier to the first <li> element.

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

Finally, the content of the <li> element 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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