In this section we will download and install jQuery for developing our demo application. jQuery comes as single js file. So, its very easy to download and install jQuery in any web application. You can even add it to your existing application and use jQuery functions. Due to this simplicity programmers are using jQuery for adding Ajax capabilities into their web applications.
The latest version of jQuery at the time of writing of this tutorials is 1.2.6. But you can download the latest version of jQuery from its official site http://jquery.com/
Visit http://jquery.com/ and download jquery-1.2.6.min.js and add into js directory of your application. You can rename it to jquery-1.2.6.js.
You are now all set and ready to add the jQuery support into your web application.
In the next section we will show you how you can develop your first Ajax jQuery application that shows the current server time.