AJAX defined

WaSP DOM Scripting Task Force definitions -

AJAX - A scripting technique for silently loading new data from the server. Although AJAX scripts commonly use the soon to be standardized XMLHttpRequest object, they could also use a hidden iframe or frame. An AJAX script is useless by itself. It also requires a DOM Scripting component to embed the received data in the document.

Unobtrusive scripting - A scripting technique that separates behaviour and structure and makes sure the user agent is capable of supporting the script before it is applied. Web pages using unobtrusive scripting are usable without JavaScript, but offer a richer user experience when JavaScript is supported.

Web Standards Project (WaSP) is collaborating with Microsoft to promote Web standards and help developers build standards conformant Web applications

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