HTML id attribute

Id attribute defines the unique identifier for the HTML elements. It is used to approach specific parts in a page.


<p>The <dfn id="ww"><abbr title="World Wide Web">WWW</abbr></dfn> is an information space where documents and other web resources are identified by Uniform Resource Locators (URLs), interlinked by hypertext links, and can be accessed via the Internet.</p>

The <a href="#ww"><dfn>WWW</dfn></a> has been central to the development of the Information Age and is the primary tool billions of people use to interact on the Internet.
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id attribute values

  • The value of this attribute is plain text.

  • The value of id attribute should be unique (no duplicate value) in a page.

  • At least one character should be present in the value attribute.

  • The value should not have spaces between words (id=learn html). It is wrong.

  • The id attribute is used to approach specific parts in a page. It may also be used to style specific elements using CSS properties.

  • id attribute can be used in the scripting language to manipulate different elements.

Related Tags

id attribute is applicable on all the HTML elements.

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