JQuery is lightweight write less, do more open source Javascript Library, used for interaction between HTML and JavaScript. JQuery is not a language. But JavaScript is a Language. JQuery is built over JavaScript.The purpose of jQuery is to make it much easier to use JavaScript on your website.
The jQuery library contains the following features:
- HTML/DOM manipulation
- CSS manipulation
- HTML event methods
- Effects and animations
- AJAX
- Utilities
How to use jQuery?
There are two ways to use jQuery.
- Local Installation − download jQuery library on your local machine and include it in your HTML code and run.
- CDN Based Version − include jQuery library into your HTML code directly from Content Delivery Network (CDN).
eg:
<html>
<head>
<title>The jQuery Example </title>
<script type=”text/javascript” src=”/jquery/jquery-2.1.3.min.js”></script >
<script type=”text/javascript”>
$(document).ready(function(){
alert(“Hello World!”);
});
</script>
</head>
<body>
</body>
</html>
eg:
<html>
<head>
<title>The jQuery Example</title>
<script type=”text/javascript” src=”http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js”>
</script>
<script type=”text/javascript”>
$(document).ready(function(){
document.write(“Hello, World!”);
});
</script>
</head>
<body>
</body>
</html>