Introduction to JQuery

Shailendra Chauhan  Print 
Posted On : 03 Jul 2010
Updated On : 14 Jul 2012
Total Views : 13,766

JQuery is a cross-browser JavaScript library that is developed to simplify the client-side scripting of HTML.It was released in january 2006 at BarCamp NYC by John Resig. JQuery is free, easy to use and open source scripting language. JQuery's syntax are easy. Using Jquery we can select DOM elements, create animations, handle different types of events, and develop ajax based applications.

JQuery also provides facilities for developers to create own plugins on top of the JavaScript library. Using these capabilities, developers are able to create high level interaction and animation, advanced effects, theme-able widgets. This contributes to the formation of interactive and dynamic web pages.

Features of JQuery

JQuery is awesome scripting library. I am using it from one year and I am very much impressed to Jquery. I like it and find myself much comfortable to work with it.There are following features of JQuery :

  1. DOM traversal and modification (including support for CSS 1-3).

  2. HTML element selections.

  3. HTML element manipulation.

  4. CSS manipulation.

  5. Effects and animations.

  6. Extensibility through plug-ins.

  7. Ajax and Events

  8. Utilities - such as browser version and the each function.

Where to put our scripts?

  1. Between the HTML document head tags.

  2. Within the HTML document body (i.e. between the body tags).

  3. In an external file (and link to it from your HTML document).

First JQuery Program

<html>
<head>
<script type="text/javascript" src="jquery.js">/script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$("p").hide();
});
});
</script>
</head>
<body>
<h2>Welcome To JQuery World !!</h2>
<p>This is a JQuery paragraph.</p>
<p>This is another JQuery paragraph.</p>
<button type="button">Click me</button>
</body>
</html> 

Note

  1. Both Google and Microsoft provides good support for jQuery.If you do not want to store the jQuery library on your website or own computer, you can load the CDN jQuery core file from Google or Microsoft.You can download the latest version of JQuery using following links.

  2. You can download JQuery 1.7 version cheat sheet from here



ABOUT AUTHOR

Shailendra Chauhan
An Entrepreneur, Microsoft MVP, Author, Architect And Corporate Trainer

He is a founder and CEO of Dot Net Tricks. He is the author of some of most popular e-books which encompass technical Interview on Node.js Interview Questions and Answers, ASP.NET MVC Interview Questions and Answers, AngularJS Interview Questions and Answers and LINQ Interview Questions and AnswersKnow more...

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