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DataTables/examples/advanced_init/footer_callback.html
Allan Jardine fde6ba858a New: Infinite scrolling! Building on the scrolling feature set that was introduced with 1.7, you can now have DataTables do infinite scrolling (bScrollInfinite: true), where data is loaded dynamically as and when needed by the user's interaction with scrolling. Infinite scrolling can be used by all DataTables' supported data sources without modification. 
New: The distance from the end of the current scrolling container before new data is added (with infinite scrolling) can be controlled with iScrollLoadGap (which is a numeric value in pixels).

New: Example (basic_init/scrolling_y_infinite.html) to show how infinite scrolling can be used.

Fixed: iDraw was not being incremented for a draw that did not use server-side processing.
2010-09-05 10:21:26 +01:00

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="shortcut icon" type="image/ico" href="http://www.sprymedia.co.uk/media/images/favicon.ico" />
<title>DataTables example</title>
<style type="text/css" title="currentStyle">
@import "../../media/css/demo_page.css";
@import "../../media/css/demo_table.css";
</style>
<script type="text/javascript" language="javascript" src="../../media/js/jquery.js"></script>
<script type="text/javascript" language="javascript" src="../../media/js/jquery.dataTables.js"></script>
<script type="text/javascript" charset="utf-8">
$(document).ready(function() {
$('#example').dataTable( {
"fnFooterCallback": function ( nRow, aaData, iStart, iEnd, aiDisplay ) {
/*
* Calculate the total market share for all browsers in this table (ie inc. outside
* the pagination)
*/
var iTotalMarket = 0;
for ( var i=0 ; i<aaData.length ; i++ )
{
iTotalMarket += aaData[i][4]*1;
}
/* Calculate the market share for browsers on this page */
var iPageMarket = 0;
for ( var i=iStart ; i<iEnd ; i++ )
{
iPageMarket += aaData[ aiDisplay[i] ][4]*1;
}
/* Modify the footer row to match what we want */
var nCells = nRow.getElementsByTagName('th');
nCells[1].innerHTML = parseInt(iPageMarket * 100)/100 +
'% ('+ parseInt(iTotalMarket * 100)/100 +'% total)';
}
} );
} );
</script>
</head>
<body id="dt_example">
<div id="container">
<div class="full_width big">
<i>DataTables</i> footer callback example
</div>
<h1>Preamble</h1>
<p><i>DataTables</i> using the header and footer callback manipulation functions (fnHeaderCallback() and fnFooterCallback()) you can perform some powerful and useful data manipulation. The example given below shows how a callback function can be used to total up visible (and hidden) data, taking into account all of DataTable's features (pagination, filtering etc).</p>
<h1>Live example</h1>
<div id="demo">
<table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
<thead>
<tr>
<th>Rendering engine</th>
<th>Browser</th>
<th>Engine version</th>
<th>CSS grade</th>
<th style="width: 150px">Market share (%)</th>
</tr>
</thead>
<tbody>
<tr class="gradeX">
<td>Trident</td>
<td>
Internet
Explorer
4.0
</td>
<td class="center">4</td>
<td class="center">X</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeC">
<td>Trident</td>
<td>Internet
Explorer 5.0</td>
<td class="center">5</td>
<td class="center">C</td>
<td class="center">0.1</td>
</tr>
<tr class="gradeA">
<td>Trident</td>
<td>Internet
Explorer 5.5</td>
<td class="center">5.5</td>
<td class="center">A</td>
<td class="center">0.5</td>
</tr>
<tr class="gradeA">
<td>Trident</td>
<td>Internet
Explorer 6</td>
<td class="center">6</td>
<td class="center">A</td>
<td class="center">36</td>
</tr>
<tr class="gradeA">
<td>Trident</td>
<td>Internet Explorer 7</td>
<td class="center">7</td>
<td class="center">A</td>
<td class="center">41</td>
</tr>
<tr class="gradeA">
<td>Trident</td>
<td>AOL browser (AOL desktop)</td>
<td class="center">6</td>
<td class="center">A</td>
<td class="center">1</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Firefox 1.0</td>
<td class="center">1.7</td>
<td class="center">A</td>
<td class="center">0.1</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Firefox 1.5</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.5</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Firefox 2.0</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">7</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Firefox 3.0</td>
<td class="center">1.9</td>
<td class="center">A</td>
<td class="center">9</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Camino 1.0</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Camino 1.5</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Netscape 7.2</td>
<td class="center">1.7</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Netscape Browser 8</td>
<td class="center">1.7</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Netscape Navigator 9</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.0</td>
<td class="center">1</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.1</td>
<td class="center">1.1</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.2</td>
<td class="center">1.2</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.3</td>
<td class="center">1.3</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.4</td>
<td class="center">1.4</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.5</td>
<td class="center">1.5</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.6</td>
<td class="center">1.6</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.7</td>
<td class="center">1.7</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Mozilla 1.8</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Seamonkey 1.1</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Gecko</td>
<td>Epiphany 2.20</td>
<td class="center">1.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>Safari 1.2</td>
<td class="center">125.5</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>Safari 1.3</td>
<td class="center">312.8</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>Safari 2.0</td>
<td class="center">419.3</td>
<td class="center">A</td>
<td class="center">1</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>Safari 3.0</td>
<td class="center">522.1</td>
<td class="center">A</td>
<td class="center">2.2</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>OmniWeb 5.5</td>
<td class="center">420</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>iPod Touch / iPhone</td>
<td class="center">420.1</td>
<td class="center">A</td>
<td class="center">0.05</td>
</tr>
<tr class="gradeA">
<td>Webkit</td>
<td>S60</td>
<td class="center">413</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 7.0</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 7.5</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 8.0</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 8.5</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 9.0</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.1</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 9.2</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.2</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera 9.5</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.8</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Opera for Wii</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Nokia N800</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Presto</td>
<td>Nintendo DS browser</td>
<td class="center">8.5</td>
<td class="center">C/A<sup>1</sup></td>
<td class="center">0.01</td>
</tr>
<tr class="gradeC">
<td>KHTML</td>
<td>Konqureror 3.1</td>
<td class="center">3.1</td>
<td class="center">C</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>KHTML</td>
<td>Konqureror 3.3</td>
<td class="center">3.3</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>KHTML</td>
<td>Konqureror 3.5</td>
<td class="center">3.5</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeX">
<td>Tasman</td>
<td>Internet Explorer 4.5</td>
<td class="center">-</td>
<td class="center">X</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeC">
<td>Tasman</td>
<td>Internet Explorer 5.1</td>
<td class="center">1</td>
<td class="center">C</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeC">
<td>Tasman</td>
<td>Internet Explorer 5.2</td>
<td class="center">1</td>
<td class="center">C</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Misc</td>
<td>NetFront 3.1</td>
<td class="center">-</td>
<td class="center">C</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeA">
<td>Misc</td>
<td>NetFront 3.4</td>
<td class="center">-</td>
<td class="center">A</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeX">
<td>Misc</td>
<td>Dillo 0.8</td>
<td class="center">-</td>
<td class="center">X</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeX">
<td>Misc</td>
<td>Links</td>
<td class="center">-</td>
<td class="center">X</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeX">
<td>Misc</td>
<td>Lynx</td>
<td class="center">-</td>
<td class="center">X</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeC">
<td>Misc</td>
<td>IE Mobile</td>
<td class="center">-</td>
<td class="center">C</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeC">
<td>Misc</td>
<td>PSP browser</td>
<td class="center">-</td>
<td class="center">C</td>
<td class="center">0.01</td>
</tr>
<tr class="gradeU">
<td>Other browsers</td>
<td>All others</td>
<td class="center">-</td>
<td class="center">U</td>
<td class="center">0.04</td>
</tr>
</tbody>
<tfoot>
<tr>
<th style="text-align:right" colspan="4">Total:</th>
<th></th>
</tr>
</tfoot>
</table>
</div>
<div class="spacer"></div>
<p class="space">Warning! The market share information given in this table is <b>fabricated</b> using a combination of (mild) judgement, the <a href="http://www.mail-archive.com/backstage@lists.bbc.co.uk/msg03899.html">BBC Browser Statistics</a> information and statistics from <a href="http://www.thecounter.com/stats/2008/August/browser.php">TheCounter.com</a>. THe lowest usage given to anyone browser is 0.01 for reasons of this example.</p>
<h1>Initialisation code</h1>
<pre>$(document).ready(function() {
$('#example').dataTable( {
"fnFooterCallback": function ( nRow, aaData, iStart, iEnd, aiDisplay ) {
/*
* Calculate the total market share for all browsers in this table (ie inc. outside
* the pagination)
*/
var iTotalMarket = 0;
for ( var i=0 ; i&lt;aaData.length ; i++ )
{
iTotalMarket += aaData[i][4]*1;
}
/* Calculate the market share for browsers on this page */
var iPageMarket = 0;
for ( var i=iStart ; i&lt;iEnd ; i++ )
{
iPageMarket += aaData[ aiDisplay[i] ][4]*1;
}
/* Modify the footer row to match what we want */
var nCells = nRow.getElementsByTagName('th');
nCells[1].innerHTML = parseInt(iPageMarket * 100)/100 +
'% ('+ parseInt(iTotalMarket * 100)/100 +'% total)';
}
} );
} );</pre>
<h1>Other examples</h1>
<h2>Basic initialisation</h2>
<ul>
<li><a href="../basic_init/zero_config.html">Zero configuration</a></li>
<li><a href="../basic_init/filter_only.html">Feature enablement</a></li>
<li><a href="../basic_init/table_sorting.html">Sorting data</a></li>
<li><a href="../basic_init/multi_col_sort.html">Multi-column sorting</a></li>
<li><a href="../basic_init/multiple_tables.html">Multiple tables</a></li>
<li><a href="../basic_init/hidden_columns.html">Hidden columns</a></li>
<li><a href="../basic_init/dom.html">DOM positioning</a></li>
<li><a href="../basic_init/state_save.html">State saving</a></li>
<li><a href="../basic_init/alt_pagination.html">Alternative pagination styles</a></li>
<li>Scrolling:
<a href="../basic_init/scroll_x.html">Horizontal</a> /
<a href="../basic_init/scroll_y.html">Vertical</a> /
<a href="../basic_init/scroll_xy.html">Both</a> /
<a href="../basic_init/scroll_y_theme.html">Themed</a> /
<a href="../basic_init/scroll_y_infinite.html">Infinite</a>
</li>
<li><a href="../basic_init/language.html">Change language information (internationalisation)</a></li>
<li><a href="../basic_init/themes.html">ThemeRoller themes (Smoothness)</a></li>
</ul>
<h2>Advanced initialisation</h2>
<ul>
<li><a href="../advanced_init/events_pre_init.html">Events (pre initialisation)</a></li>
<li><a href="../advanced_init/events_post_init.html">Events (post initialisation)</a></li>
<li><a href="../advanced_init/column_render.html">Column rendering</a></li>
<li><a href="../advanced_init/html_sort.html">Sorting without HTML tags</a></li>
<li><a href="../advanced_init/dom_multiple_elements.html">Multiple table controls (sDom)</a></li>
<li><a href="../advanced_init/length_menu.html">Defining length menu options</a></li>
<li><a href="../advanced_init/dom_toolbar.html">Custom toolbar (element) around table</a></li>
<li><a href="../advanced_init/highlight.html">Row highlighting with CSS</a></li>
<li><a href="../advanced_init/complex_header.html">Column grouping through col/row spans</a></li>
<li><a href="../advanced_init/row_grouping.html">Row grouping</a></li>
<li><a href="../advanced_init/row_callback.html">Row callback</a></li>
<li><a href="../advanced_init/footer_callback.html">Footer callback</a></li>
<li><a href="../advanced_init/language_file.html">Change language information from a file (internationalisation)</a></li>
</ul>
<h2>Data sources</h2>
<ul>
<li><a href="../data_sources/dom.html">DOM</a></li>
<li><a href="../data_sources/js_array.html">Javascript array</a></li>
<li><a href="../data_sources/ajax.html">Ajax source</a></li>
<li><a href="../data_sources/server_side.html">Server side processing</a></li>
</ul>
<h2>Server-side processing</h2>
<ul>
<li><a href="../server_side/server_side.html">Obtain server-side data</a></li>
<li><a href="../server_side/custom_vars.html">Add extra HTTP variables</a></li>
<li><a href="../server_side/post.html">Use HTTP POST</a></li>
<li><a href="../server_side/column_ordering.html">Custom column ordering (in callback data)</a></li>
<li><a href="../server_side/pipeline.html">Pipelining data (reduce Ajax calls for paging)</a></li>
<li><a href="../server_side/row_details.html">Show and hide details about a particular record</a></li>
<li><a href="../server_side/select_rows.html">User selectable rows (multiple rows)</a></li>
</ul>
<h2>API</h2>
<ul>
<li><a href="../api/add_row.html">Dynamically add a new row</a></li>
<li><a href="../api/multi_filter.html">Individual column filtering (using "input" elements)</a></li>
<li><a href="../api/multi_filter_select.html">Individual column filtering (using "select" elements)</a></li>
<li><a href="../api/highlight.html">Highlight rows and columns</a></li>
<li><a href="../api/row_details.html">Show and hide details about a particular record</a></li>
<li><a href="../api/select_row.html">User selectable rows (multiple rows)</a></li>
<li><a href="../api/select_single_row.html">User selectable rows (single row) and delete rows</a></li>
<li><a href="../api/editable.html">Editable rows (with jEditable)</a></li>
<li><a href="../api/form.html">Submit form with elements in table</a></li>
<li><a href="../api/counter_column.html">Index column (static number column)</a></li>
<li><a href="../api/show_hide.html">Show and hide columns dynamically</a></li>
<li><a href="../api/api_in_init.html">API function use in initialisation object (callback)</a></li>
<li><a href="../api/tabs_and_scrolling.html">DataTables scrolling and tabs</a></li>
<li><a href="../api/regex.html">Regular expression filtering</a></li>
</ul>
<h2>Plug-ins</h2>
<ul>
<li><a href="../plug-ins/plugin_api.html">Add custom API functions</a></li>
<li><a href="../plug-ins/sorting_plugin.html">Sorting and type detection</a></li>
<li><a href="../plug-ins/paging_plugin.html">Custom pagination controls</a></li>
<li><a href="../plug-ins/range_filtering.html">Range filtering / custom filtering</a></li>
<li><a href="../plug-ins/dom_sort.html">Live DOM sorting</a></li>
<li><a href="../plug-ins/html_sort.html">Automatic HTML type detection</a></li>
</ul>
<p>Please refer to the <a href="http://www.datatables.net/"><i>DataTables</i> documentation</a> for full information about its API properties and methods.</p>
<div id="footer" style="text-align:center;">
<span style="font-size:10px;">DataTables &copy; Allan Jardine 2008-2010</span>
</div>
</div>
</body>
</html>
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