Wednesday, March 12, 2014

jquery simple pagination

Jquery simple pagination. Here the following steps.

Step 1 :

<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
//how much items per page to show
var show_per_page = 5;
//getting the amount of elements inside content div
var number_of_items = $('#content').children().size();
//calculate the number of pages we are going to have
var number_of_pages = Math.ceil(number_of_items/show_per_page);

//set the value of our hidden input fields
$('#current_page').val(0);
$('#show_per_page').val(show_per_page);

//now when we got all we need for the navigation let's make it '

/*
what are we going to have in the navigation?
- link to previous page
- links to specific pages
- link to next page
*/
var navigation_html = '<a class="previous_link" href="javascript:previous();">Prev</a>';
var current_link = 0;
while(number_of_pages > current_link){
navigation_html += '<a class="page_link" href="javascript:go_to_page(' + current_link +')" longdesc="' + current_link +'">'+ (current_link + 1) +'</a>';
current_link++;
}
navigation_html += '<a class="next_link" href="javascript:next();">Next</a>';

$('#page_navigation').html(navigation_html);

//add active_page class to the first page link
$('#page_navigation .page_link:first').addClass('active_page');

//hide all the elements inside content div
$('#content').children().css('display', 'none');

//and show the first n (show_per_page) elements
$('#content').children().slice(0, show_per_page).css('display', 'block');

});

function previous(){

new_page = parseInt($('#current_page').val()) - 1;
//if there is an item before the current active link run the function
if($('.active_page').prev('.page_link').length==true){
go_to_page(new_page);
}

}

function next(){
new_page = parseInt($('#current_page').val()) + 1;
//if there is an item after the current active link run the function
if($('.active_page').next('.page_link').length==true){
go_to_page(new_page);
}

}
function go_to_page(page_num){
//get the number of items shown per page
var show_per_page = parseInt($('#show_per_page').val());

//get the element number where to start the slice from
start_from = page_num * show_per_page;

//get the element number where to end the slice
end_on = start_from + show_per_page;

//hide all children elements of content div, get specific items and show them
$('#content').children().css('display', 'none').slice(start_from, end_on).css('display', 'block');

/*get the page link that has longdesc attribute of the current page and add active_page class to it
and remove that class from previously active page link*/
$('.page_link[longdesc=' + page_num +']').addClass('active_page').siblings('.active_page').removeClass('active_page');

//update the current page input field
$('#current_page').val(page_num);
}

</script>

Step 2 :

<style>
#page_navigation a{
padding:3px;
border:1px solid gray;
margin:2px;
color:black;
text-decoration:none
}
.active_page{
background:darkblue;
color:white !important;
}
</style>
</head>

Step 3 :
<!-- the input fields that will hold the variables we will use -->
<input type='hidden' id='current_page' />
<input type='hidden' id='show_per_page' />

<!-- Content div. The child elements will be used for paginating(they don't have to be all the same,
you can use divs, paragraphs, spans, or whatever you like mixed together). '-->
<div id='content'>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
<p>Vestibulum consectetur ipsum sit amet urna euismod imperdiet aliquam urna laoreet.</p>
<p>Curabitur a ipsum ut elit porttitor egestas non vitae libero.</p>
<p>Pellentesque ac sem ac sem tincidunt euismod.</p>
<p>Duis hendrerit purus vitae nibh tincidunt bibendum.</p>
<p>Nullam in nisi sit amet velit placerat laoreet.</p>
<p>Vestibulum posuere ligula non dolor semper vel facilisis orci ultrices.</p>
<p>Donec tincidunt lorem et dolor fringilla ut bibendum lacus fringilla.</p>
<p>In non eros eu lacus vestibulum sodales.</p>
<p>Duis ultrices metus sit amet sem adipiscing sit amet blandit orci convallis.</p>
<p>Proin ullamcorper est vitae lorem mollis bibendum.</p>
<p>Maecenas congue fringilla enim, tristique laoreet tortor adipiscing eget.</p>
<p>Duis imperdiet metus et lorem venenatis nec porta libero porttitor.</p>
<p>Maecenas lacinia lectus ac nulla commodo lacinia.</p>
<p>Maecenas quis massa nisl, sed aliquet tortor.</p>
<p>Quisque porttitor tellus ut ligula mattis luctus.</p>
<p>In at mi dolor, at consectetur risus.</p>
<p>Etiam id erat ut lorem fringilla dictum.</p>
<p>Curabitur sagittis dolor ac nisi interdum sed posuere tellus commodo.</p>
<p>Pellentesque quis magna vitae quam malesuada aliquet.</p>
<p>Curabitur tempus tellus quis orci egestas condimentum.</p>
<p>Maecenas laoreet eros ac orci adipiscing pharetra.</p>
<p>Nunc non mauris eu nibh tincidunt iaculis.</p>
<p>Ut semper leo lacinia purus hendrerit facilisis.</p>
<p>Praesent et eros lacinia massa sollicitudin consequat.</p>
<p>Proin non mauris in sem iaculis iaculis vel sed diam.</p>
<p>Nunc quis quam pulvinar nibh volutpat aliquet eget in ante.</p>
<p>In ultricies dui id libero pretium ullamcorper.</p>
<p>Morbi laoreet metus vitae ipsum lobortis ultrices.</p>
<p>Donec venenatis egestas arcu, quis eleifend erat tempus ullamcorper.</p>
<p>Morbi nec leo non enim mollis adipiscing sed et dolor.</p>
<p>Cras non tellus enim, vel mollis diam.</p>
<p>Phasellus luctus quam id ligula commodo eu fringilla est cursus.</p>
<p>Ut luctus augue tortor, in volutpat enim.</p>
<p>Cras bibendum ante sed erat pharetra sodales.</p>
<p>Donec sollicitudin enim eu mi suscipit luctus posuere eros imperdiet.</p>
<p>Vestibulum mollis tortor quis ipsum suscipit in venenatis nulla fermentum.</p>
<p>Proin vehicula suscipit felis, vitae facilisis nulla bibendum ac.</p>
<p>Cras iaculis neque et orci suscipit id porta risus feugiat.</p>
<p>Suspendisse eget tellus purus, ac pulvinar enim.</p>
<p>Morbi hendrerit ultrices enim, ac rutrum felis commodo in.</p>
<p>Suspendisse sagittis mattis sem, sit amet faucibus nisl fermentum vitae.</p>
<p>Nulla sed purus et tellus convallis scelerisque.</p>
<p>Nam at justo ut ante consectetur faucibus.</p>
<p>Proin dapibus nisi a quam interdum lobortis.</p>
<p>Nunc ornare nisi sed mi vehicula eu luctus mauris interdum.</p>
<p>Mauris auctor suscipit tellus, at sodales nisi blandit sed.</p>

</div>

<!-- An empty div which will be populated using jQuery -->
<div id='page_navigation'></div>
</body>

OUTPUT :

Thanks for the helpful site click .


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