js 格式化时间（显示格式为：yyyy-mm-dd hh:mi:ss）

function formattime(val){
     if(val == "" || val == null){
      return "";
     }
     var year = parseInt(val.year)+1900;
     var month = (parseInt(val.month)+1);
     var date = parseInt(val.date);
     date = date > 9 ? date:('0'+date);
      var hours = parseInt(val.hours);
     hours = hours > 9 ? hours:('0'+hours);
     var minutes = parseInt(val.minutes);
     minutes = minutes > 9 ? minutes:('0'+minutes);
     var seconds = parseInt(val.seconds);
     seconds = seconds > 9 ? seconds:('0'+seconds);
     var time = year+'-'+month+'-'+date+' '+hours+':'+minutes+':'+seconds;
  
     return time;

}

原文连接：https://blog.csdn.net/u010964869/article/details/51095827