Sort by button text in jQuery DataTables

datatables-button-text-sort.js

// Custom sorting function to sort paid/unpaid claims

$.fn.dataTableExt.afnSortData['button-text'] = function ( oSettings, iColumn )
{
    var aData = [];
    $( 'td:eq('+iColumn+') button', oSettings.oApi._fnGetTrNodes(oSettings) ).each( function () {
        aData.push( this.text );
    } );
    return aData;
};