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AHAH: Asychronous HTML and HTTP
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Java Script Based Frameworks
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AHAH is technology for directly including HTML fragments using AJAX. AHAH is a very simple technique for dynamically updating web pages using JavaScript. It involves using XMLHTTPRequest to retrieve (X)HTML fragments which are then inserted directly into the web page, whence they can be styled using CSS.
AHAH can be considered a subset of AJAX, since (X)HTML is just a special kind of XML. However, it is a subset with some very specific and useful properties:
The lack of custom XML schemas dramatically reduces design time
AHAH can trivially reuse existing HTML pages, avoiding the need for a custom web service
All data transport is done via browser-friendly HTML, easing debugging and testing
The HTML is designed to be directly embedded in the page's DOM, eliminating the need for parsing
As HTML, designers can format it using CSS, rather than programmers having to do XSLT transforms
Processing is all done on the server, so the client-side programming is essentiall nil (moving opaque bits)
Read more...
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