The framework is implemented by using a component library. The library set Ajax functionality into existing pages, so there is no need to write any JavaScript code or to replace existing components with new Ajax one. Ajax4jsf enables page-wide Ajax support instead of the traditional component-wide support and it gives the opportunity to define the event on the page. An event invokes an Ajax request and areas of the page which are synchronized with the JSF Component Tree after changing the data on the server by Ajax request in accordance with events fired on the client.