AJAX refers Asynchronous JavaScript and XML. It is used for allowing the client side of an application to communicate with the server side of the application. Before AJAX, there was no way for the client side of a web application to communicate directly with the server. Instead, you would have to use page loads. With AJAX, the client and server can communicate freely with one another.
Instead of going to a login page, and then navigating back to the page you originally wanted, with AJAX, a user can type in their user name and password directly into the original page. From there AJAX will send a request to the server to log them in. The server lets the page know they have been logged in,.....
Google was one of the first major companies to start using AJAX, and Googles search suggestion tool was one of the first ways they used it, and one of the first autocomplete tools made. When typing into the Google search bar, it starts to use AJAX to get common results from the database on each keystroke. AutoComplete is great.....
Social bookmarking sites like Digg and Reddit let the users decide the main content of the site by voting on content that the users like. They use AJAX to handle all of the voting, so that the users are able to voice their opinions on a number of stories quickly and easily.......
One of the things that made Twitter so popular was their simple and easytouse interface. When someone makes a tweet, it is instantly added to their feed, and everything is updated. Recently, Twitter has started using AJAX with their trending topics pages. Every few seconds, the page lets the user know that more tweets have been made about the.....
Forms have always tricky to work with, but AJAX can make them a lot better for the users. AJAX can be used in a variety of ways, from the auto complete mentioned above, to validation and submission as well. Some sites use AJAX to check if a form meets certain requirements, such as password strength, or if something is.....
Chatting online has come a long way from the days of IRC. Chat rooms and instant messaging can now be handled in the browser completely. There are two main AJAX processes in a chat room or IM application. Think of one of them as your ears, and one of them as your mouth. Your mouth updates the server and.....
Creating a clean, slick user interface is a very popular use of AJAX. It allows users to accomplish more on a single page. The benefits of this are twofold First, it makes using the web application quicker and easier for the user; Secondly, it cuts down on the number of requests you have to make to the server, which.....
When using AJAX, the page that is using the JavaScript isnt just limited to the server it is located on. The AJAX can make a call to any server online. This is how a number of plugins for Content Management Systems like WordPress work, and other various scripts like Google Adsense.......
Popup blockers are very common place these days, and for a good reason popups are annoying. Using light boxes, which are popups inside the browser window, the popup blocker cant stop it, and they arent quite as irritating to the user. Some people use them for advertising, like on Darren Rowes ProBlogger.com. They can also be used for something.....
Using AJAX along with Flash is a rarely used technique, but it can be used to generate some impressive results. The flash game website Kongregate uses this to great effect. Using their API, they have their own achievement system that involves winning badges for completing various accomplishments in games. When a badge is earned, the API in Flash sends.....
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