HTML <pre> id Attribute

The id attribute on a <pre> tag assigns an identifier to the preformatted text element. The identifier must be unique across the page.

Example

#

An id attribute on a <pre> element.

  SELECT FirstName, LastName
  FROM Customer ORDER BY LastName
<pre id="pre-sql">
  SELECT FirstName, LastName
  FROM Customer ORDER BY LastName
</pre>

Using id

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

The identifier must be unique across the page.

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

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


Syntax

<pre 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

A <pre> element with a unique id.
Clicking the button displays the content of the element.

  SELECT FirstName, LastName
  FROM Customer ORDER BY LastName

<pre id="mypre">
  SELECT FirstName, LastName
  FROM Customer ORDER BY LastName
</pre>
  
<br/>
<button onclick="show();">Show pre content</button>

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

Code explanation

The id attribute assigns a unique identifier for the pre.

When the button is clicked, JavaScript locates the pre through the id.

It extracts the <pre> content and displays it 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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