$(".add-row").click(function() {
    var param = $("#param").val();
    var valor = $("#valor").val();
    var hideClass = document.getElementById("myCheck").checked ? "hidetext" : ""
    var markup = "<tr><td><input type='button' class='delete-row button green' value='Eliminar' name='record'></td><td><input type='button' class='delete-row button blue' value='Editar' name='record'></td><td>" + param + "</td><td class='" + hideClass + "'>" + valor + "</td></tr>";

    $("table tbody").append(markup);

    $('input[type="text"]').val('');
    $('input[type="password"]').val('');
  });