HTML <blockquote> id Attribute

HTML <base>

HTML <body>

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

The identifier must be unique across the page.

Example

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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

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

The id allows JavaScript to easily access the <blockquote> 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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<blockquote 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 <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

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Here is when id support started for each browser: