Links, Anchors, URLs, and Images
LINKS |
ANCHORS | URLS | IMAGES
has the form
<A HREF="URL">Text for link</A>
where URL (the Uniform Resource Locator to which to go) is of
the form
Protocol://host.name/directory/filename
or
Protocol://host.name/directory/filename#anchorname
e.g.,
http://brillig.nebrwesleyan.edu/~glarose/dviview.html#otherfonts
In this case, otherfonts is the name of an anchor in the
dviview.html document.
A special type of link is the
mailto link:
<a href="mailto:email_address">email
me!</a>
creates a link that will allow users to send email to
email_address.
is defined by
<A NAME="NAME_OF_ANCHOR">Text to go
to</A>
For example,
<A NAME="otherfonts">Link to "otherfonts"
comes to here</a>
Browsers generally do not display anchors with any discernable
characteristic.
URLs and File Systems
![[file pic]](/~glarose/images/brillig.gif)
Suppose that the files on brillig are set up as shown to the right.
Then the link
<a
href="http://brillig/~glarose/index.html>
links to the file index.html in the directory
~glarose. My server adds "index.html" if it is left
off, so
<a
href="http://brillig/~glarose/>
means the same thing.
Any part of a link in a document may omit the portion of the URL that
is common to the file being linked to and the document containing the
link. Thus, in the file index.html the link
<a href="dviview.html">
refers to the file dviview, and the link
<a href="classes/html/">
refers to the file index.html in the directory
~glarose/classes/html/.
Another way of saying this is to say that "incomplete URLs are given
relative to the document in which they appear." This also allows a
link such as
<a href="../../dviview.html#otherfonts">
in the file index.html in the directory
/~glarose/classes/html/ -- because ..
means "go up one directory."
Images may be included in a document with the img tag:
<IMG SRC="URL_of_image" ALT="alternate text">
For example, to include the file glr.gif in the file
/~glarose/index.html,
<img src="images/glr.gif" alt="picture of me">
The alt attribute is not required but it is good form to
include it -- it is the text that is displayed if the browser
doesn't display images.
Anchors, Links, URLs and Images
Comments to Gavin LaRose (glarose@NebrWesleyan.edu)
Last modified