Query String - Structure

Structure

A typical URL containing a query string is as follows:

http://server/path/program?query_string

When a server receives a request for such a page, it may run a program, passing the query_string unchanged to the program. The question mark is used as a separator and is not part of the query string.

A link in a web page may have a URL that contains a query string, however, HTML defines three ways a web browser can generate the query string:

  • a web form via the
    ...
     element
  • a server-side image map via the ismap attribute on the element with a construction
  • an indexed search via the now deprecated element

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