<form method="POST" class="forma" name="sendMsg" id="ajax_form" action=""a>
                  {% csrf_token %}
                  <div class="input-container">
                      <div class="input-group mb-3">
                          <textarea name="msg" style="min-height:50px; max-height:150px;" required type="text" class="form-control" placeholder="Введите Ваше сообщение" aria-label="Recipient's username" aria-describedby="button-addon2"></textarea>
                          <div class="input-group-append">
                              <button id="button"  type="button" class="btn btn-outline-secondary" >Отправить</button>
                          </div>
                      </div>
                  </div>
              </form>
 <script language="JavaScript">
    $(document).ready(function() {
        $('#ajax_form').button(function() { // catch the form submit event
            $.ajax({ // create an AJAX call...
                data: $(this).serialize(), // get the form data
                type: $(this).attr('method'), // GET or POST
                url: $(this).attr('action'), // the file to call
                success: function(response) { // on success..
                    $('#sohbet').html(response); // update the DIV
                }
            });
            return false;
        });
    });
</script>