Description: Event handlers in Ajax and JavaScript have always been thought is a necessary but simple function to configure. When configured in a traditional manner, Ajax based applications will work as expected – events will be properly loaded and the elements will be handled in an efficient manner. Usually developers would use event handlers to store data in elements in order for the application to run smoothly. But storing data in elements has a downside. Because elements are continuously stored with data, the Ajax application will eventually run into data storage problem. In the end, you’ll end up with a cache problem that is common in IE browsers.