function fmtDate(obj){
          var date =  new Date(obj);
          var y = 1900+date.getYear();
          var m = "0"+(date.getMonth()+1);
          var d = "0"+date.getDate();
          return y+"-"+m.substring(m.length-2,m.length)+"-"+d.substring(d.length-2,d.length);
    }
原文:https://www.cnblogs.com/zhaoshuxin/p/14113628.html