(转)jquery获取当前日期和时间

function getnowtime() {  
                var nowtime = new Date();  
                var year = nowtime.getFullYear();  
                var month = padleft0(nowtime.getMonth() + 1);  
                var day = padleft0(nowtime.getDate());  
                var hour = padleft0(nowtime.getHours());  
                var minute = padleft0(nowtime.getMinutes());  
                var second = padleft0(nowtime.getSeconds());  
                var millisecond = nowtime.getMilliseconds(); millisecond = millisecond.toString().length == 1 ? "00" + millisecond : millisecond.toString().length == 2 ? "0" + millisecond : millisecond;  
                return year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + second + "." + millisecond;  
            }  
       //补齐两位数  
      function padleft0(obj) {  
              return obj.toString().replace(/^[0-9]{1}$/, "0" + obj);  
      }

获取当前时间,格式 2018-06-05 10:00:00.000