Dynamic Web Page Layout

Dynamic pages can serve a variety of purposes

Dynamic Web pages are capable of producing different content for different visitors from the same source code file. The website can display different content based on what operating system or browser the visitor is using, whether she is using a PC or a mobile device, or even the source that referred the visitor. A dynamic Web page is not necessarily better than a static Web page. The two simply serve different purposes.

Dynamic pages can serve a variety of purposes. For example, websites run by content management systems allow a single source code file to load the content of many different possible pages. Content creators use a gateway page to submit the material for new pages into the CMS' database. The dynamic page can then load the material for any page in the database, based on parameters in the URL with which a visitor requests the page. Dynamic pages are also what let users log into websites to see personalized content.

Developers generally create static pages with HTML, but use languages like PHP, Javascript, or Actionscript to create dynamic pages. They can also use frameworks like Ruby on Rails, Django, or Flex for dynamic pages. Dynamic languages and frameworks also have the technical capacity to create static Web page content. However, doing so creates source code that is unnecessarily complex for its purpose while being more difficult to maintain.

Web pages can be either static or dynamic. "Static" means unchanged or constant, while "dynamic" means changing or lively. Therefore, static Web pages contain the same prebuilt content each time the page is loaded, while the content of dynamic Web pages can be generated on-the-fly.

Standard html pages are static web pages. they contain html code, which defines the structure and content of the web page. each time an html page is loaded, it looks the same. the only way the content of an html page will change is if the web developer updates and publishes the file.

You can often tell if a page is static or dynamic simply by looking at the page's file extension in the URL, located in the address field of the Web browser. If it is ".htm" or ".html," the page is probably static. If the extension is ".php," ".asp," or ".jsp," the page is most likely dynamic. While not all dynamic Web pages contain dynamic content, most have at least some content that is generated on-the-fly.

Other types of Web pages, such as PHP, ASP, and JSP pages are dynamic Web pages. These pages contain "server-side" code, which allows the server to generate unique content each time the page is loaded. For example, the server may display the current time and date on the Web page. It may also output a unique response based on a Web form the user filled out. Many dynamic pages use server-side code to access database information, which enables the page's content to be generated from information stored in the database. Websites that generate Web pages from database information are often called database-driven websites.

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