AJAX and jQuery
Uses of AJAX
AJAX also finds use in networking sites, where instead of going to a login page and then moving to the page you originally wanted to go to, AJAX allows you to enter your login credentials directly in the original page, from where a request is sent to the server to log the user in. The sever lets the browser know that the user is logged in, and the current page is then updated as required.
AJAX is also used by some popular sites to decide the content of the sites through voting.
Search suggestion and Auto Fill
Google was one of the first heavyweights to implement AJAX in their search suggestion tool, as well as auto-complete applications, which used AJAX to search and suggest for possible results after every keystroke.
AJAX is also used for several other purposes like light boxes, which have replaced conventional and irritating pop-ups. AJAX also finds use in chat servers, where two main AJAX processors work as the “eyes” and the “ears” of the server.
As far as the advantages of jQuery are concerned, one of the principal reasons why it is so popular among website developers is the fact that it is much more lightweight, easy to use and relatively faster than other commonly used libraries. Using jQuery, it is possible to develop concise scripts as compared to other libraries, which make it further possible to develop to perform a large array of functions using lesser complicated and extensive coding. Another advantage that jQuery has over other libraries is that it is compatible with all browsers, which eliminates the necessity to develop separate client side codes for different browsers. JQuery’s principal advantage is its ability to develop lightweight AJAX applications in ASP.Net using JSON support, thus bulky ASP.Net codes can be avoided. The functionality which is provided by the jQuery library can also be extended, and using jQuery also makes it possible to incorporate several templates freely available on the Internet.
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