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Jquery Basics, How to use jquery?

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Below are some basic examples of  Jquery and its feature.

How to add jQuery to your website

Installing
You can download jquery.js file form jquery.com.

<script type=”text/javascript” src=”jquery.js></script>

OR 
Recommended 

<script type=”text/javascript” src=”http://ajax.googleapis.com/ajax/
libs/jquery/1.3.0/jquery.min.js
></script>

Jquery Code
Generally used script run this when the HTML is all ready.  Live Demo

<script type=”text/javascript>
$(document).ready(function()
{
alert(‘Welcome to mistonline.in‘);
});
</script>

Similar as previous script. Take a look at Live Demo

<script type=”text/javascript>
$(function() 
{
alert(‘Welcome to mistonline.in‘);
});
</script>

Run this when the whole page has been downloaded. Take a look at Live Demo

<script type=”text/javascript>
$(window).load(function()
{
alert(‘Loaded Whole Page including images)’);
});
</script>

jQuery Stucture
Here $ = jquery, selector is a DOM element and function execute a jquery fuction.

$(selector).function(parameters);

DOM - Document Object Model Wiki

Selectors

-> Select DOM elements eg: $(‘h1′) ,$(‘div’)$(‘li’)..
-> Select ID : $(‘#id_name’)
-> Select Class : $(‘.class_name’)

Working with Click() Event

Structure $(selector).click()

<script type=”text/javascript>
$(function() 
{  

$(‘#button_action‘).click(function()
{
alert(‘Hey Button‘);
});

$(‘.link_action‘).click(function()
{
alert(‘Hey Link‘);
});

});
</script>

<body>
<include type=’button‘ value=’BUTTON‘ id=’button_action‘/>
<a href=’#‘ class=’link_action‘>LINK</a>
</body>

Hide and Show With Click Event
Hiding and Showing the div tag.

<script type=”text/javascript>
$(function() 
{  

$(‘.hide_box’).click(function()
{
$(‘#box’).hide();
});

$(‘.show_box’).click(function()
{
$(‘#box’).show();
});

});
</script>

<body>
<a href=”#” class=”hide_box“>Hide</a>
<a href=”#” class=”show_box“>Show</a>
<div id=”box“></div>
</body>
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