js获取当前时间并格式化

                        var dates = new Date();
                        var years = dates.getFullYear();
                        var months = dates.getMonth()+1;
                           var days = dates.getDate();
                        var hours = dates.getHours();
                          var mins =dates.getMinutes();
                           var secs = dates.getSeconds();
                        //document.write(years+"-"+months+"-"+days+" "+hours+":"+mins+":"+secs);

                      var message_date=(years+"-"+months+"-"+days+" "+hours+":"+mins+":"+secs);