Updating a web page
There are two ways to create this kind of effect: Web pages that use client-side scripting must use presentation technology broadly called rich interfaced pages.
Client-side scripting languages like Java Script or Action Script, used for Dynamic HTML (DHTML) and Flash technologies respectively, are frequently used to orchestrate media types (sound, animations, changing text, etc.) of the presentation.
Watch That Page is a service that enables you to automatically collect new information from your favorite pages on the Internet.
You select which pages to monitor, and Watch That Page will find which pages have changed, and collect all the new content for you.
This may or may not truncate the browsing history or create a saved version to go back to, but a dynamic web page update using Ajax technologies will neither create a page to go back to, nor truncate the web browsing history forward of the displayed page.
Classical hypertext navigation, with HTML or XHTML alone, provides "static" content, meaning that the user requests a web page and simply views the page and the information on that page.
These kinds of pages can also use, on the client-side, the first kind (DHTML, etc.).
It is difficult to be precise about "dynamic web page beginnings" or chronology, because the precise concept makes sense only after the "widespread development of web pages": HTTP has been in use since 1990, HTML, as standard, since 1996.
The service is With Watch That Page you can make your own newsletter customized with the information important to you, from the sources of your choice.
Competitors, partners, online news and magazines, reports, events. There is nothing to download to use Watch That Page. All you have to do is to register your profile, and add the pages you want to watch.