fnLengthChange.js
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/**
* Change the number of records that can be viewed on a single page in
* DataTables.
*
* DataTables 1.10 provides the `dt-api page.len()` method to get and set the
* page length using the built-in API. As such this method is marked deprecated,
* but is available for use with legacy version of DataTables. Please use the
* new API if you are used DataTables 1.10 or newer.
*
* @name fnLengthChange
* @summary Change the paging display length
* @author [Pedro Alves](http://www.webdetails.pt/)
* @deprecated
*
* @example
* $(document).ready(function() {
* var table = $('#example').dataTable();
* table.fnLengthChange( 100 );
* } );
*/
jQuery.fn.dataTableExt.oApi.fnLengthChange = function ( oSettings, iDisplay )
{
oSettings._iDisplayLength = iDisplay;
oSettings.oApi._fnCalculateEnd( oSettings );
/* If we have space to show extra rows (backing up from the end point - then do so */
if ( oSettings._iDisplayEnd == oSettings.aiDisplay.length )
{
oSettings._iDisplayStart = oSettings._iDisplayEnd - oSettings._iDisplayLength;
if ( oSettings._iDisplayStart < 0 )
{
oSettings._iDisplayStart = 0;
}
}
if ( oSettings._iDisplayLength == -1 )
{
oSettings._iDisplayStart = 0;
}
oSettings.oApi._fnDraw( oSettings );
if ( oSettings.aanFeatures.l )
{
$('select', oSettings.aanFeatures.l).val( iDisplay );
}
};