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Dynamic Websites

Dynamic Websites

Properties associated with dynamic web pages

Classical hypertext navigation occurs among "static" documents, and, for web users, this experience is reproduced using static web pages, meaning that a page retrieved by different users at different times is always the same, in the same form.

However, a web page can also provide a live user experience. Content (text, images, form fields, etc.) on a web page can change in response to different contexts or conditions. In dynamic sites, page content and page layout are created separately. The content is retrieved from a database and is placed on a web page only when needed or asked. This allows for quicker page loading, and it allows just about anyone with limited web design experience to update their own website via an administrative tool. This set-up is ideal for those who wish to make frequent changes to their websites including text and image updates, e.g. e-commerce.

Two types of Dynamic Websites

Client-side scripting and content creation

Using client-side scripting to change interface behaviors within a specific web page, in response to mouse or keyboard actions or at specified timing events. In this case the dynamic behavior occurs within the presentation.

Such web pages use presentation technology called rich interfaced pages. Client-side scripting languages like JavaScript or ActionScript, used for Dynamic HTML (DHTML) and Flash technologies respectively, are frequently used to orchestrate media types (sound, animations, changing text, etc.) of the presentation. The scripting also allows use of remote scripting, a technique by which the DHTML page requests additional information from a server, using a hidden Frame, XMLHttpRequests, or a Web service.

The Client-side content is generated on the user's computer. The web browser retrieves a page from the server, then processes the code embedded in the page (often written in JavaScript) and displays the retrieved page's content to the user.

The innerHTML property (or write command) can illustrate the client-side dynamic page generation: two distinct pages, A and B, can be regenerated as document.innerHTML = A and document.innerHTML = B; or "on load dynamic" by document.write(A) and document.write(B).

The first "widespread used" version of JavaScript was 1996 (with Netscape 3 an ECMAscript standard).

 

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