Hyperlink

Hyperlink is a reference in a hypertext document to another document or other resource. It is a fundamental concept in the World Wide Web, and is used in HTML to create links to other web pages. Hyperlinks are often underlined and colored blue, and change color when clicked or visited.

Overview

A hyperlink, or simply a link, is a reference to data that the reader can directly follow either by clicking or by hovering. A hyperlink points to a whole document or to a specific element within a document. Hypertext is text with hyperlinks. A software system that is used for viewing and creating hypertext is a hypertext system, and to create a hyperlink is to hyperlink (or simply to link). A user following hyperlinks is said to navigate or browse the hypertext.

Types of hyperlinks

There are several types of hyperlinks, including:

• Anchor: An anchor hyperlink is a link bound to a portion of a document—generally text, though not necessarily. For instance, it may also be a hot area in an image (image map in HTML), a designated, often irregular part of an image.

• URL: A URL hyperlink, when it is linked to some resource that is network-accessible, a URL is provided, which is used to retrieve the resource.

• Internal link: An internal hyperlink is a hyperlink that is a reference or navigation element in a document to another section of the same document, to another document, or to a specified section of another document, that is, hypertext navigation from one document to another.

• External link: An external hyperlink is a hyperlink that points at (targets) any URL that is not within the same domain as the domain of the URL in the hyperlink.

See also

• HTML
• URL
• Anchor
• Internal link
• External link

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  Hyperlink example diagram
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  Scheme of hyperlinks
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  Douglas Engelbart demonstrating the NLS system