js 里时间转换util

/**
* unix 时间转化成 YYYY-MM-dd hh:mm:ss
*/
function unixTimeToStr(unixTime){

var ymd=new Date();
ymd.setTime(unixTime*1000);
var year=ymd.getFullYear().toString();
var month=(ymd.getMonth()+1).toString();

var date=ymd.getDate().toString();
var hour=ymd.getHours().toString();
var minute=ymd.getMinutes().toString();
var second=ymd.getSeconds().toString();

if( month.length == 1 ){
month = "0" + month;
}
if( date.length == 1 ){
date = "0" + date;
}
if( hour.length == 1 ){
hour = "0" + hour;
}
if( minute.length == 1 ){
minute = "0" + minute ;
}
if(second.length == 1 ){
second = "0" + second;
}
var time =year+'-'+month+'-'+date+' '+hour+':'+minute+':'+second;
return time;
}

/**
* unix 时间转化成 YYYY-MM-dd hh:mm
* @param unixTime
* @returns {String}
*/
function unixTimeToMinStr(unixTime){

var ymd=new Date();
ymd.setTime(unixTime*1000);
var year=ymd.getFullYear().toString();
var month=(ymd.getMonth()+1).toString();

var date=ymd.getDate().toString();
var hour=ymd.getHours().toString();
var minute=ymd.getMinutes().toString();
var second=ymd.getSeconds().toString();

if( month.length == 1 ){
month = "0" + month;
}
if( date.length == 1 ){
date = "0" + date;
}
if( hour.length == 1 ){
hour = "0" + hour;
}
if( minute.length == 1 ){
minute = "0" + minute ;
}

var time =year+'-'+month+'-'+date+' '+hour+':'+minute;
return time;
}

/**
* unix 时间转化成 MM-dd hh:mm
* @param unixTime
* @returns {String}
*/
function unixTimeToShortStr(unixTime){

var ymd=new Date();
ymd.setTime(unixTime*1000);
var month=(ymd.getMonth()+1).toString();
var date=ymd.getDate().toString();
var hour=ymd.getHours().toString();
var minute=ymd.getMinutes().toString();

if( month.length == 1 ){
month = "0" + month;
}
if( date.length == 1 ){
date = "0" + date;
}
if( hour.length == 1 ){
hour = "0" + hour;
}
if( minute.length == 1 ){
minute = "0" + minute ;
}
var time = month+'-'+date+' '+hour+':'+minute;
return time;
}

/**
* 日期转换成unxi时间戳
* @param dateStr
* @returns {Number}
*/
function getUnixTime(dateStr)
{
/* var newstr = dateStr.replace(/-/g,'/');
var date = new Date(newstr);
var time_str = date.getTime().toString();
return time_str.substr(0, 10);*/

dateStr = dateStr.replace(/-/g,'/');
var timestamp = new Date(dateStr).getTime()/1000;
return timestamp;
}

/**
* 获取当前日期unxi时间戳
* @returns unix时间戳
*/
function getCurrentDateUnixTime(){
var oDate = new Date(); // 实例一个时间对象
var year = oDate.getFullYear();
var month = oDate.getMonth()+1;
var day = oDate.getDate();
var nowDate = year +"-"+ month + "-"+ day +" 00:00:00" ;
return getUnixTime(nowDate);
}

/**
* 获取前几天的日期 格式: yyyy-MM-dd
* @param 往前推算天数
* @returns unix时间戳
*/
function getBeforeDateUnixTime(n){
var n = n;
var d = new Date();
var year = d.getFullYear();
var mon=d.getMonth()+1;
var day=d.getDate();
if(day <= n){
if(mon>1) {
mon=mon-1;
}
else {
year = year-1;
mon = 12;
}
}
d.setDate(d.getDate()-n);
year = d.getFullYear();
mon=d.getMonth()+1;
day=d.getDate();
s = year+"-"+(mon<10?('0'+mon):mon)+"-"+(day<10?('0'+day):day);
s +=" 00:00:00";
return getUnixTime(s);
}

/**
* unix 时间转化成 YYYY年MM月dd日
*/
function unixTimeToDate(unixTime){
var ymd=new Date();
ymd.setTime(unixTime*1000);
var year=ymd.getFullYear().toString();
var month=(ymd.getMonth()+1).toString();
var date=ymd.getDate().toString();
var nowDate = year+"年"+month+"月"+date+"日";
return nowDate;
}

//计算天数差的函数，通用
function DateDiff(sDate1, sDate2){
//sDate1和sDate2是2002-12-18格式
var aDate, oDate1, oDate2, iDays ;
var ua = navigator.userAgent.toLowerCase();
if(ua.indexOf("chrome") > -1){
aDate = sDate1.split("-")
oDate1 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0]) //转换为12-18-2002格式
aDate = sDate2.split("-")
oDate2 = new Date(aDate[1] + '-' + aDate[2] + '-' + aDate[0])
iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 /24) //把相差的毫秒数转换为天数
}
else{

aDate = sDate1.split("-") ;
oDate1 = new Date(aDate[0] + '/' + aDate[1] + '/' + aDate[2]) ; //转换为12-18-2002格式
aDate = sDate2.split("-") ;
oDate2 = new Date(aDate[0] + '/' + aDate[1] + '/' + aDate[2]) ;
iDays = parseInt(Math.abs(oDate1 - oDate2) / 1000 / 60 / 60 /24); //把相差的毫秒数转换为天数
}
return iDays
}

/*获取日期的年、月、日*/
function fortime(date){
var date = new Date(date);
var y = date.getFullYear();
var m = date.getMonth()+1;
var d = date.getDate();
var nowDate = y +"-"+ m + "-"+ d ;
return nowDate;
}