HTML <pre> id Attribute

HTML <picture>

HTML <progress>

An id on a <pre> tag assigns an identifier to the element.

The identifier must be unique across the page.

Example

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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

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

The id allows JavaScript to easily access the <pre> element.

It is also used to point to a specific id selector in a style sheet.

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

Syntax

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<pre 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

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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

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Here is when id support started for each browser: