Image map: Difference between revisions

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{{selfref|For image maps in Wikipedia, see [[mw:Extension:ImageMap|Extension:ImageMap]].}}

In [[HTML]] and [[XHTML]], an '''image map''' is a list of coordinates relating to a specific [[image]], created in order to [[hyperlink]] areas of the image to different destinations (as opposed to a normal image link, in which the entire area of the image links to a single destination). For example, a map of the world may have each country hyperlinked to further information about that country. The intention of an '''image map''' is to provide an easy way of linking various parts of an image without dividing the image into separate [[image file]]sfiles.

==Server-side==

'''Server-side image maps''' were first supported in [[Mosaic (web browser)]] version 1.1.<ref>{{cite web|url=http://1997.webhistory.org/www.lists/www-talk.1993q2/0343.html|title=IMG extension for Mosaic 1.1}}</ref> '''Server-side image maps''' enable the [[web browser]] to send positional information to the server about where the user [[Point and click|clicks]] within an image. This allows the server to make [[pixel]]-by-pixel decisions about what content to return in response (possible methods are to use image mask layers, database queries, or configuration files on the server).

The [[HTML]] code for this type of '''server-side image map''' requires the <code><img></code> tag to be inside an anchor tag <code><a>...</a></code> and the <code><img></code> must include the <code>ismap</code> attribute.