One key problem that AJAX addresses is improving Web application user interfaces. By reducing the need to constantly refresh the entire Web page, Atlas helps ensure that your Web application is always responsive to user actions. For example, suppose you're filling in a Web form to register for a free email account, or a free magazine and you are asked to select the country you are from. After you select the appropriate country, the entire page refreshes so that the application can now ask you specific questions related to the selected country, such as the state you are in, etc. Even worse, the information you have already painstakingly enter..
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