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Perl and Apache: Your visual blueprint for developing dynamic Web content by Adam McDaniel

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Chapter 19. FACILITATING DYNAMIC AJAX CALLS WITH PERL

Introducing AJAX

AJAX, or Asynchronous JavaScript and XML, is a development technique that uses client-side JavaScript to communicate using XML through to a server-side component, independent of the initial HTML download of a Web page. AJAX has the benefit of being able to change an already-loaded Web page dynamically, without needing to download and render an entirely new page just to display new content.

Normally, after an initial page load, when the user clicks a button on a Web page, the browser loads the URL link assigned to the button, and the entire Web page refreshes. After implementing AJAX, that button click actually opens up a connection to the Web server, independent of the Web browser's ...

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