javascript获取当前时间

  function getCurrentDate(){
             var myDate = new Date();
             var month = myDate.getMonth()+1;
             var day = myDate.getDate();
             var split = "-"
             if(month >= 1 &&month <= 9){
                 month = "0" + month;
             }
             if(day >=0 && day <=9){
                 day = "0" + day;
             }
             currentDate = myDate.getFullYear() + split + month + split + day;
             alert(currentDate)
         }
         getCurrentDate()