HTML <blockquote> id Attribute

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

Example

#

An id attribute on a <blockquote> tag.

And so, my fellow Americans: ask not what your country can do for you – ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man.
-- President Kennedy, 1961, Inaugural address.
<acticle>
  <blockquote id="kennedy-inauguration">
     And so, my fellow Americans: ask not what your country 
     can do for you – ask what you can do for your country. 
     My fellow citizens of the world: ask not what America 
     will do for you, but what together we can do for the 
     freedom of man.
  </blockquote> 

  -- President Kennedy, 1961, Inaugural address.
</article>

Using id

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

The identifier must be unique across the page.

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

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


Syntax

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

And so, my fellow Americans: ask not what your country can do for you – ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man.
-- President Kennedy, 1961, Inaugural address

<article>
  <blockquote id="kennedyquote">
     And so, my fellow Americans: ask not what your country 
     can do for you – ask what you can do for your country. 
     My fellow citizens of the world: ask not what America 
     will do for you, but what together we can do for the 
     freedom of man.
  </blockquote>

  -- President Kennedy, 1961, Inaugural address
</article>

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

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

Code explanation

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

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

Finally, the content of the blockquote 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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