/* Custom filtering function which will search data in column four between two values */

$.fn.dataTable.ext.search.push(

    function( settings, data, dataIndex ) {

        var min = parseInt( $('#min').val(), 10 );

        var max = parseInt( $('#max').val(), 10 );

        var age = parseFloat( data[3] ) || 0; // use data for the age column

        if ( ( isNaN( min ) && isNaN( max ) ) ||

             ( isNaN( min ) && age <= max ) ||

             ( min <= age   && isNaN( max ) ) ||

             ( min <= age   && age <= max ) )

        {

            return true;

        }

        return false;

    }

);

$(document).ready(function() {

    var table = $('#example').DataTable();

    // Event listener to the two range filtering inputs to redraw on input

    $('#min, #max').keyup( function() {

        table.draw();

    } );

} );