$(document).ready(function () {

      $('#studentTable').DataTable({

           data: dataSet,

            dom: 'Bfrtip',         

           columns: [

            { title: "Name" },

            { title: "Position" },

            { title: "Office" },

            { title: "Extn." },

            { title: "Start date" },

            { title: "Salary" }

        ],

​

          initComplete: function () {

              this.api().columns([0,1,2]).every(function () {

                  var column = this;

                  var select = $('<select><option value=""></option></select>')

                      .appendTo($(column.footer()).empty())

                      .on('change', function () {

                          $('#studentTable').DataTable().draw();

                      });

​

                  column.data().unique().sort().each(function (d, j) {

                      select.append('<option value="' + d + '">' + d + '</option>')

                  });

              });

          }

​

        });

    });

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

                        function (settings, searchData, index, rowData, counter) {

                            if (settings.nTable.id !== 'studentTable') {

                                return true;

                            }

​

                            var position = $("#position option:selected").text();

                            var office = $("#office option:selected").text();

                            var off = $("#off option:selected").text();

​

                            // Display the row if both inputs are empty

                            if (position.length === 0 && office.length === 0 && off.length === 0) {

                                return true;

                            }

​

                            // Display row if position matches position selection

                            hasPosition = true;

​

                            if (position !== searchData[0]) {

                                hasPosition = false; //Doesn't match - don't display

                            }

​

                            // Display the row if office matches the office selection

                            hasOffice = true;

​

                            if (office !== searchData[1]) {

                                hasOffice = false; //Doesn't match - don't display

                            }

​

                            hasOff = true;

​

                            if (off !== searchData[2]) {

                                hasOff = false; //Doesn't match - don't display

                            }

​

                            // If either position or office matched then display the row        

                            return true ? hasPosition || hasOffice || hasOff : false;

        });

var dataSet = [

    [ "Tiger Nixon", "System Architect", "Edinburgh", "5421", "2011/04/25", "$320,800" ],

    [ "Garrett Winters", "Accountant", "Tokyo", "8422", "2011/07/25", "$170,750" ],

    [ "Ashton Cox", "Junior Technical Author", "San Francisco", "1562", "2009/01/12", "$86,000" ],

    [ "Cedric Kelly", "Senior Javascript Developer", "Edinburgh", "6224", "2012/03/29", "$433,060" ],

    [ "Airi Satou", "Accountant", "Tokyo", "5407", "2008/11/28", "$162,700" ],

    [ "Brielle Williamson", "Integration Specialist", "New York", "4804", "2012/12/02", "$372,000" ],

    [ "Herrod Chandler", "Sales Assistant", "San Francisco", "9608", "2012/08/06", "$137,500" ],

    [ "Rhona Davidson", "Integration Specialist", "Tokyo", "6200", "2010/10/14", "$327,900" ],

    [ "Colleen Hurst", "Javascript Developer", "San Francisco", "2360", "2009/09/15", "$205,500" ],

    [ "Sonya Frost", "Software Engineer", "Edinburgh", "1667", "2008/12/13", "$103,600" ],

    [ "Jena Gaines", "Office Manager", "London", "3814", "2008/12/19", "$90,560" ],

    [ "Quinn Flynn", "Support Lead", "Edinburgh", "9497", "2013/03/03", "$342,000" ],

    [ "Charde Marshall", "Regional Director", "San Francisco", "6741", "2008/10/16", "$470,600" ],

    [ "Haley Kennedy", "Senior Marketing Designer", "London", "3597", "2012/12/18", "$313,500" ],

    [ "Tatyana Fitzpatrick", "Regional Director", "London", "1965", "2010/03/17", "$385,750" ],

    [ "Michael Silva", "Marketing Designer", "London", "1581", "2012/11/27", "$198,500" ],

    [ "Paul Byrd", "Chief Financial Officer (CFO)", "New York", "3059", "2010/06/09", "$725,000" ],

    [ "Gloria Little", "Systems Administrator", "New York", "1721", "2009/04/10", "$237,500" ],

    [ "Bradley Greer", "Software Engineer", "London", "2558", "2012/10/13", "$132,000" ],

    [ "Dai Rios", "Personnel Lead", "Edinburgh", "2290", "2012/09/26", "$217,500" ],

    [ "Jenette Caldwell", "Development Lead", "New York", "1937", "2011/09/03", "$345,000" ],

    [ "Yuri Berry", "Chief Marketing Officer (CMO)", "New York", "6154", "2009/06/25", "$675,000" ],

    [ "Caesar Vance", "Pre-Sales Support", "New York", "8330", "2011/12/12", "$106,450" ],

    [ "Doris Wilder", "Sales Assistant", "Sidney", "3023", "2010/09/20", "$85,600" ],

    [ "Angelica Ramos", "Chief Executive Officer (CEO)", "London", "5797", "2009/10/09", "$1,200,000" ],

    [ "Gavin Joyce", "Developer", "Edinburgh", "8822", "2010/12/22", "$92,575" ],

    [ "Jennifer Chang", "Regional Director", "Singapore", "9239", "2010/11/14", "$357,650" ],

    [ "Brenden Wagner", "Software Engineer", "San Francisco", "1314", "2011/06/07", "$206,850" ],

    [ "Fiona Green", "Chief Operating Officer (COO)", "San Francisco", "2947", "2010/03/11", "$850,000" ],

    [ "Shou Itou", "Regional Marketing", "Tokyo", "8899", "2011/08/14", "$163,000" ],

    [ "Michelle House", "Integration Specialist", "Sidney", "2769", "2011/06/02", "$95,400" ],

    [ "Suki Burks", "Developer", "London", "6832", "2009/10/22", "$114,500" ],

    [ "Prescott Bartlett", "Technical Author", "London", "3606", "2011/05/07", "$145,000" ],

    [ "Gavin Cortez", "Team Leader", "San Francisco", "2860", "2008/10/26", "$235,500" ],

    [ "Martena Mccray", "Post-Sales support", "Edinburgh", "8240", "2011/03/09", "$324,050" ],

    [ "Unity Butler", "Marketing Designer", "San Francisco", "5384", "2009/12/09", "$85,675" ]

];