js关于时间的各种操作

js关于时间的各种操作

1. //获取系统当前时间转为yyMMddHHmmss格式

function GetDateTimeToString()
{
var date_ = new Date();
var year = date_.getFullYear();
var month = date_.getMonth()+1;
var day = date_.getDate();
if(month<10) month = “0”+month;
if(day<10) day = “0”+day;
var hours = date_.getHours();
var mins = date_.getMinutes();
var secs = date_.getSeconds();
var msecs = date_.getMilliseconds();
if(hours<10) hours = “0”+hours;
if(mins<10) mins = “0”+mins;
if(secs<10) secs = “0”+secs;
if(msecs<10) secs = “0”+msecs;
return year+month+day+hours+mins+secs;
}

2. 比较两个时间相差天数
   function daysBetween(‘2019-11-12’,‘2019-12-12’){
   //Date.parse() 解析一个日期时间字符串，并返回1970/1/1 午夜距离该日期时间的毫秒数
   var time1 = Date.parse(new Date(sDate1));
   var time2 = Date.parse(new Date(sDate2));
   var nDays = Math.abs(parseInt((time2 - time1)/1000/3600/24));
   return nDays;
   };