ET710 What are Hyperlinks?

1
ET710 What are Hyperlinks?

• A hyperlink, or hot link, is a selectable element
  in an electronic document that serves as an
  access point to other electronic resources (the
  targets). Typically, you click the hyperlink to
  access the linked resource. Familiar hyperlinks
  include buttons, icons, image maps, and clickable
  text links.
• Material containing hyperlinks is often called
  hypertext (although not all hypertext contains
  hyperlinks). Hypertext systems can be very
  simple, such as a text document with internal
  references, or very large and complex, such as
  the World Wide Web.
• The web is built around hypertext and hypermedia.
  A hypertext document has certain keywords or
  phrases linked to other online documents. A
  person reading a hypertext document about dogs,
  for example, might be able to select the
  highlighted word "beagle" and call up another
  document for more information about that
  particular breed. With documents intertwined by
  links into a web of information, you can select
  paths to browse online resources, a process often
  referred to as surfing.
• Hypermedia extends the concept of hypertext to
  other forms of information, including images,
  sounds, and even video clips. A person reading a
  hypermedia document about dogs, for example,
  might select a picture of a beagle and hear the
  sound of a dog barking.

2
ET710 What is a URL?

• URL stands for Uniform Resource Locator, and is
  used to specify addresses on the World Wide Web.
  A URL is the fundamental network identification
  for any resource connected to the web (e.g.,
  hypertext pages, images, and sound files).
• URLs have the following format
• protocol//hostname/other_information For
  example, the URL for Indiana University's home
  page is
• http//www.indiana.edu/ The protocol specifies
  how information from the link is transferred. The
  protocol used for web resources is Hypertext
  Transfer Protocol (HTTP). Other protocols
  compatible with most web browsers include FTP,
  telnet, newsgroups, and Gopher. The protocol is
  followed by a colon, two slashes, and then the
  domain name. The domain name is the computer on
  which the resource is located. Links to
  particular files or subdirectories may be further
  specified after the domain name. The directory
  names are separated by single forward slashes.
• In the URL http//newmedia.qcc.cuny.edu/sp08/et_71
  0_m1/
• Newmedia is a subnetwork of the qcc network
  which is a subnetwork of the cuny network.
• sp08 is a folder name on the newmedia
  subnetwork.
• Et_710_m1 is a subfolder of sp08The root of
  your personal website is a subfolder of et_710_mi