In this article, I will explain Jquery fundamentals and introduction about
jquery.
What is Jquery?
JQuery is a JavaScript library used to simplify client-side
scripting, event handling, and animation on client side.
jQuery is not a language, It’s a well written JavaScript code.
It was released in January 2006 by John Resig.
jQuery is light weighted and the slogan for Jquery
is "write less, do more".
It’s free, open source software, licensed under
MIT license.
The goal of jQuery is to make it much easier
to use JavaScript on our website.
jQuery will run exactly
the same in all major browsers, including Internet Explorer 6.
Microsoft includes
Jquery on Ajax framework and MVC framework.
Features
& Advantages:
Simple, Easy to use
Fast & Extensible
Improves Performance of the application
Handles complicated functionality with less
coding
Helps to develop browser compatible pages
DOM Manipulation
Ajax Integration (Server side calls)
Handles Effects and Animations
Wide range of plugins available for various specific
needs
How to
use Jquery?
1. To include jQuery, first download the latest version of
Jquery at www.jquery.com.
2. Extract it and add files to the
project folder.
3. Include the jquery file in head section.
<head runat="server">
<title> How to add Jquery</title>
<script src="jquery-1.10.2.js" type="text/javascript"></script>
</head>
We can also add Jquery file from
Content Delivery Network (CDN) where clients access data from one particular
server.
Some of the Leading CDNs are,
1. Google CDN
<script type="text/javascript"
src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
2. Microsoft CDN
<script type="text/javascript"
src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.4.1.min.js">
</script>
By using CDNs, Clients can achieve better performance of retrieving
data
How to Execute Jquery?
We can execute Jquery by the following ways
1 $(document).ready(function () {}; - Execute Jquery only when the page fully loaded
2 $(function
() { }); - Execute Jquery when
the page loads
1. $(function () { }) – It will not wait for the whole page
to load completely.
<script type="text/javascript">
$(function () {
alert("Welcome to Jqueryjohn.com");
});
</script>
2. $(document).ready(function () {} – This method is best and safest way to execute
Jquery
<script type="text/javascript">
$(document).ready(function () {
alert("Welcome to Jqueryjohn.com");
});
</script>