调用Ajax后刷新页面

I have two pages, on the first page you can select an item with a <select> </select>. When you select an item, a form is automatically displayed through an AJAX Call. In this form, data is automatically loaded from a mysql db in a <textarea> </textarea>. The moment you submit your form, I want the new data to be added to the <textarea> </textarea> I just can't manage this, who can help me?

$(document).ready(function () {
        $("#btnAdd").click(function (e) {
            /* Retrieving value from textboxes */
        var besproken = $('#besproken').val();  
            $.post("save.php", { 
              besproken: besproken, 
          }, function (data) {
          $("#autoSave").html("Coaching ");
          $("#btnAdd").attr("disabled", true);
          });
            return false;
        });
    });

If all you want to do is insert the data into the textarea just use jQuery to selected the element $("textarea") then call the text method and pass in your data .text(data). The result call will look like $("textarea").text(data)

$(document).ready(function() {
  $("#btnAdd").click(function(e) {
    /* Retrieving value from textboxes */
    var besproken = $('#besproken').val();
    $.post("save.php", {
      besproken: besproken,
    }, function(data) {
      $("#autoSave").html("Coaching ");
      $("#btnAdd").attr("disabled", true);
      $("textarea").text(data);
    });
    return false;
  });
});

You can take a div. When you click submit you will get a ajax response, load this inside the div.

success: function(data){
     $("#status").load("url of the php-file");
     or 
     $("#status").html(data);
 }