Here in this article we discussed about ajax. We explored ajax history. As we know ajax is most useful and powerful tool in website development.
Really Simple History of Ajax
Ajax (pronounced /ˈeɪˌdʒæks/) (shorthand for Asynchronous JavaScript and XML) is a group of interrelated web development techniques used on the client-side to create interactive web applications. With Ajax, web applications can retrieve data from the server asynchronously in the background without interfering with the display and behavior of the existing page. The use of Ajax techniques has led to an increase in interactive or dynamic interfaces on web pages. Data is usually retrieved using the XMLHttpRequest object. Despite the name, the use of XML is not actually required, nor do the requests need to be asynchronous.
If you’re working on Ajax based websites, you’ll always face usability problems when users click on the Back or Forward buttons on the broswer. Using Really Simple History (RSH) allows you over come this issue.
The Really Simple History (RSH) framework makes it easy for AJAX applications to incorporate bookmarking and back and button support. By default, AJAX systems are not bookmarkable, nor can they recover from the user pressing the browser’s back and forward buttons. The RSH library makes it possible to handle both cases.
In addition, RSH provides a framework to cache transient session information that persists after a user leaves the web page. This cache is used by the RSH framework to help with history issues, but can also be used by your own applications to improve application performance. The cache is linked to a single instance of the web page, and will disappear when the user closes their browser or clear their browser’s cache.
RSH works on Internet Explorer 6+ and Gecko-based browsers, like Firefox. Safari is not supported.
Link: Really Simple History
Demo Link: testDhtmlHistory.html (try using the browser back button after you get to this demo)
