jQuery Introduction
What is Jquery

jQuery is free, open source software. We can also say jQuery is a client-side scripting language. jQuery was first released in January 2006 at BarCamp NYC by John Resig. Now a day jQuery is most popular Javascript library. 

JQuery is not programming language. we create Jquery code by using javascript library. For javascript library there are two way to get javascript library.

1- Download Jquery from jQuery.com.
2- Include Jquery from CDN(content delivery network).

Download Jquery from jQuery.com

Download Jquery from jQuery.com. then save jquery(javascript library) in same directory.
then write this code on head section

<script src="jquery-1.9.0.min"></script>

Include Jquery from CDN(content delivery network)

Basically There are two type of CDN(content delivery network). Like using Google's CDN and using Microsoft's CDN

For Google's CDN
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"> </script>

For Microsoft's CDN
<script src="//ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.3.min.js"> </script>

Note:- use this script on head section.

Why jQuery is required

After Ajax and Javascript a new topic jquery come in Market. Jquery has some more feature compare to older javascript.

  • Performance is better compare to Javascript
  • Browser's compatible is better compare to Javascript
  • Loading is Fast.
  • Line of Coding is less compare to Javscript.

Now a Days mostly compaines use Jquery like Microsoft, Google, IBM etc

Use of jQuery.

Navigate a document

Create animations

Developing Ajax application.

Jquery Release

Jquery has many release Approx(20 Release), but we here show some release.

1.0  26,Aug2006

1.1  24,Jan 2007

1.12 9,Jan 2016

2.0  18,Apr 2013

2.1  24,Jan 2014

3.0  9,Jun 2016

3.2  16,Mar 2017

How to save jQuery library?

Try to save jquery library jQuery-xxx.min.js.this is called minified version of JQuery library. this file occupy less more and loading time faster. compare to jQuery-xxx.js