Quiero concatenar la variable 'Apellido' dentro del valor = '' pero parece que no puedo obtener la sintaxis para hacerlo. Para que pueda mostrar los valores de la variable particular en un campo de entrada

función añadir () {

 var Surname = document.getElementById('b_surname').value; var Maiden = document.getElementById('b_maidenn').value; var Relationship = document.getElementById('b_relationship').value; var Othername = document.getElementById('b_othern').value; var City = document.getElementById('b_city').value; var Suburb = document.getElementById('b_suburb').value; var Address = document.getElementById('b_gps').value; var DoB = document.getElementById('b_dob').value; var Landmark = document.getElementById('b_landmark').value; var Email = document.getElementById('b_email').value; var Percentage = document.getElementById('b_percentage').value; var new_chq_no = parseInt($('#total_chq').val()) + 1; // var new_chq_no1 = parseInt($('#total_chq1').val()) + 1; var new_input = "<input class='form-control ' name='list_servicename[]' value =''style='margin-bottom:10px'id='new_" + new_chq_no + "'> " + Surname + ">"; var new_input1 = "<input type='text' class='form-control' name='list_serviceprice[]' style='margin-bottom:10px' id='new_" + new_chq_no + Maiden + "'>"; var new_input2 = "<input type='text' class='form-control' name='list_service[]' style='margin-bottom:10px' id='new_" + new_chq_no + Othername + "'>"; var new_input3 = "<input type='text' class='form-control' name='list_[]' style='margin-bottom:10px' id='new_" + new_chq_no + Relationship + "'>"; var new_input4 = "<input type='text' class='form-control' name='list_[]' style='margin-bottom:10px' id='new_" + new_chq_no + Percentage +"'>"; $('#new_chq').append(new_input); $('#new_chq1').append(new_input1); $('#new_chq2').append(new_input2); $('#new_chq3').append(new_input3); $('#new_chq4').append(new_input4); $('#total_chq').val(new_chq_no); $('#total_chq1').val(new_chq_no1); }