Among the JavaScript library released, few have been recognized to be as effective as jQuery. This lightweight library has been the subject of different discussions since it was launched in 2006. Basically, jQuery has the ability to flawlessly string together JavaScript together with HTML. Because of its effectiveness, there have different types of lightweight applications and plug-ins launched using jQuery. Ajax based websites that offers simple interface would virtually work together using jQuery’s simple interface.
In AJAX, most of the action occurs inside a single web page. When a page is loaded, a new instance of the JavaScript interpreter is started. When you leave a page, jumping to Google for example, all of your JavaScript objects are completely cleared away; you lose all of your state.
If you?ve ever confronted the task of validating data in a form, you know about choice. Whether it?s choosing between client side or server-side scripts, or the amount of information a user should see on the screen, the results should always give the user quick and meaningful feedback, while providing a solution for when things go wrong.
Ajax is actually a family of technologies that have been available for years. The means to make requests to the server using only JavaScript were built into Internet Explorer 5.5, but the possibilities of the technology were overlooked. It was only in 2005 that the techniques were rediscovered and used, notably to excellent effect in Google?s ? GMail web application.
Developers who follow this practice do this thinking that the code will eventually help regular users in browsing the website. Take for example an Ajax based shopping cart. Instead of having to go through different pages in security and setting up parameters, developers will just place everything in a single page. That exact page will hasten the process of regular user’s shopping. When this process is used, developers have achieved the purpose of the coding it that way.
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