JS中如何处理时间
这篇文章将为大家详细讲解有关JS中如何处理时间，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
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在项目中用到的，用js 来得到年月日，星期，当前多少个周的函数，备忘在这里，以后参考。
Date.prototype.getWeek = function(){
var firstDayOfYear = new Date(this.getFullYear(),0,1);
var millOfDay = 24*60*60*1000;
return Math.ceil((((this - firstDayOfYear) / millOfDay) + firstDayOfYear.getDay()+1)/7);
};
/*
01 October 2013-10:20:20
01 November 2013-10:20:20
01 December 2013-10:20:20
08 October 2013-01:55 pm
*/
var monthMapping = {
"January" : "01",
"February" : "02",
"March" : "03",
"April" : "04",
"May" : "05",
"June" : "06",
"July" : "07",
"August" : "08",
"September" : "09",
"October" : "10",
"November" : "11",
"December" : "12"
};
function formatAmPm() {
var dateTimeStr = arguments[0] ;
var dateStr = dateTimeStr.split("-");
if (lang.currentLang == "zh_CN" || lang.currentLang == "zh_TW"){
var s_year = lang.getMessage('yearCn') ;
var s_month = lang.getMessage('monthCn') ;
var s_day = lang.getMessage('dayCn') ;
var dateArray = dateStr[0].split(" ") ;
var s_time = dateStr[1].split(" ")[1] == "am" ? lang.getMessage('amCn') :lang.getMessage('pmCn') ;
var ret = dateArray[2] + s_year + monthMapping[dateArray[1]] + s_month + dateArray[0] + s_day + " " + s_time + dateStr[1].split(" ")[0] ;
if ( arguments.length > 1 ){
/*admin feature ,so using en date*/
ret = arguments[1] ? dateStr[0] : dateStr[1] ;
}
return ret ;
}
else{
if ( arguments.length > 1 ){
return arguments[1] ? dateStr[0] : dateStr[1] ;
}
else{
return dateStr[0] + " " + dateStr[1] ;
}
}
}
function formatDate(dateTime, pattern) {
if(pattern == "" || pattern == null) {
pattern = "/";
}
var date = new Date(dateTime);
var year = date.getFullYear();
var month = date.getMonth()+1;
month = month <10 ? '0'+month : month;
var day = date.getDate();
day = day <10 ? '0'+day : day;
return month + pattern + day + pattern + year;
}
function formatDateDDMMYYYY(dateTime) {
var ymd = dateTime.split(" ")[0];
var dateArray = ymd.split("-");
return dateArray[2]+"."+dateArray[1]+"."+dateArray[0];
}
/**
*
* @param dateTime YYYY-MM-DD hh:mm:ss
*/
function formatDateDDMMYY(dateTime){
var ymd = dateTime.split(" ")[0];
var dateArray = ymd.split("-");
return dateArray[2]+"."+dateArray[1]+"."+dateArray[0].substring(2);
}
/**********************calculate date*****************************/
var MONTH = [
{key:"Jan.",value:1},
{key:"Feb.",value:2},
{key:"Mar.",value:3},
{key:"Apr.",value:4},
{key:"May.",value:5},
{key:"Jun.",value:6},
{key:"Jul.",value:7},
{key:"Aug.",value:8},
{key:"Sept.",value:9},
{key:"Oct.",value:10},
{key:"Nov.",value:11},
{key:"Dec.",value:12}
];
var DAYS = [31,28,31,30,31,30,31,31,30,31,30,31];
function getYears(){
var years = [];
var date = new Date();
var year = date.getFullYear();
var minYear = year - 10;
for(var currentYear=minYear;currentYear <= year;currentYear++){
years.push(currentYear);
}
return years;
};
function fillinMonthOptions(id,currentMonth){
$("#" + id).get(0).options.length = 0;
for(var i= 0;i"+MONTH[i].key+"");
}
else{
$("#" + id).append(""+MONTH[i].key+"");
}
}
};
function fillinAllMonthOptions(monthIds,currentMonth){
//var monthIds = ["loginMonth_1","loginMonth_2","auditMonth_1","auditMonth_2"];
for (var i=0;i"+years[i]+"");
}
else{
$("#" + id).append(""+years[i]+"");
}
}
};
function fillinAllYearOptions(yearIds,currentYear){
//var yearIds = ["loginYear","auditYear"];
years = getYears();
for(var i= 0;i"+i+"");
}
}
function fiilinDays(year,month,dayIds){
var monthDays = getMonthDays(year,month);
for(var i=0;i"+week[0] + "(" + week[1]+"-"+week[2]+")");
}
}
function fillinWeeks(year,weekIds){
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