为什么ajax只读最后一行？

Question

我正在使用fullcalendar，并试图在事件拖动之前保存它，但是Ajax只读最后一行。下面是我的代码：

$('#event_add').unbind('click').click(function() {
                title = $('#event_title').val();
                event_url = $('#event_url').val();
                stime = $('#event_stime_hr').val() + ':' + $('#event_stime_min').val();
                etime = $('#event_etime_hr').val() + ':' + $('#event_etime_min').val();
                allday = $('#chkallday').val();
                eventTime = '';
                if(stime.length > 1){
                    stime = stime + ' ' + $('#optstime').val();
                    eventTime = stime;
                    if(etime.length > 1){
                        etime = etime + ' ' + $('#optetime').val();
                        eventTime = eventTime + ' to ' + etime;
                    }
                }

                if(title.length===0){
                    $('#erreventtitle').html('Event title is required');
                }else{
                    $('#erreventtitle').html('');
                    var eventDetails = eventTime + ' ' + title;
                    var eventid = null;
                    $.ajax ({
                        type: "GET",
                        url: "calendar/save?",
                        data: 'title='+title+'&stime='+stime+'&etime='+etime+'&allday='+allday+'&bgcolor=&url='+event_url,
                        cache: false,
                        success: function(data){
                            eventid = data;
                            console.log(data);
                            console.log('savedata');
                        }
                    });
                    console.log('add event');
                    addEvent(eventDetails, eventid);
                }

            });

控制台的输出：

add event
save data

我不知道为什么ajax只读最后一行......感谢帮助！

Answer 1

Ajax call is asynchronous so when it is executing, the following lines of code are also executing.

Depend on the response speed of server side, "save data" will be printed when it's done.