These days lots of people hear the word Ajax, but not many of them know – What it is? How it works? Ajax in fact refers to a particular type of programming for creating interactive web applications that are faster and more users friendly. This language uses the existing standards and allows the users to retrieve data asynchronously from the server without interfering with the display.

Ajax is very useful language as it reduces connections to the server and sections of pages can be loaded individually. There are various things that you need to know before using the Ajax technique for your websites. Some of the most crucial things you require to know are:

1. Bookmarking a page is very common among the Internet surfers. However, it is very tough to bookmark a particular page of Ajax application if it is dynamically created.  Those who commonly need bookmarking can do so by using the URL fragment identifier.
2. If the Ajax developer is not an experienced one, there could be some security and privacy issues. Hence make sure that you inform the developer about the security and privacy issues to
   keep the data safe from hackers.
3. It is quite possible that certain devices such as mobile phones, PDAs and other screen readers may not have the required support for interpreting Ajax enabled web pages. Hence make sure that the above devices have support for reading the pages of Ajax.
4. If your pages are Ajax enabled and you want them on all the search engines, you need to include direct links. This is done because so many search engines may not be equipped for Ajax.
5. While using the Ajax technique, the initial loading time for a particular page may be more, depending on the amount of data as compared to other techniques for websites.
6. Since Ajax applications lack a standard body; there are no best practices to test the Ajax applications. The tools that are available to test Ajax applications, they fail to interpret data protocols and the models.
   

Despite all of the above facts, Ajax is quiet popular and is being used almost everywhere on the web. If it is created properly, it can give the Internet users a richer and faster experience. Hence, the most important point is that you find out a highly experienced developer and create the best user experience on the web.