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JS实现处理时间,年月日,星期的公共方法示例

2019-05-31 08:39 567 查看

本文实例讲述了JS实现处理时间,年月日,星期的公共方法。分享给大家供大家参考,具体如下:

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.length; i++){
if (MONTH.value == currentMonth){
$("#" + id).append("<option value="+MONTH[i].value+" selected=\"selected\">"+MONTH[i].key+"</option>");
}
else{
$("#" + id).append("<option value="+MONTH[i].value+">"+MONTH[i].key+"</option>");
}
}
};
function fillinAllMonthOptions(monthIds,currentMonth){
//var monthIds = ["loginMonth_1","loginMonth_2","auditMonth_1","auditMonth_2"];
for (var i=0;i<monthIds.length;i++){
fillinMonthOptions(monthIds[i],currentMonth);
};
};
function fillinYearOptions(id,years,currentYear){
$("#" + id).get(0).options.length = 0;
for(var i= 0;i<years.length; i++){
if (years[i] == currentYear){
$("#" + id).append("<option value="+years[i]+" selected=\"selected\">"+years[i]+"</option>");
}
else{
$("#" + id).append("<option value="+years[i]+">"+years[i]+"</option>");
}
}
};
function fillinAllYearOptions(yearIds,currentYear){
//var yearIds = ["loginYear","auditYear"];
years = getYears();
for(var i= 0;i<yearIds.length; i++){
fillinYearOptions(yearIds[i],years,currentYear);
}
};
function isLeapYear(year){
return (year % 4 === 0) && (year % 100 !==0) || (year % 400 === 0);
}
/*get days of a month*/
function getMonthDays(year,month){
var monthDays = DAYS[month-1];
if (isLeapYear(year) && month == 2){
monthDays = 29;
}
return monthDays;
}
function fillinDay(id,monthDays){
$("#" + id).get(0).options.length = 0;
for(var i=1;i<=monthDays;i++){
$("#" + id).append("<option value="+i+">"+i+"</option>");
}
}
function fiilinDays(year,month,dayIds){
var monthDays = getMonthDays(year,month);
for(var i=0;i<dayIds.length;i++){
fillinDay(dayIds[i],monthDays);
}
}
function getWeeksOfYear(year){
var firstDayOfYear = new Date(year,0,1);
var days = firstDayOfYear.getDay() + (isLeapYear(year) ? 366 : 365);
return Math.ceil(days/7);
}
function getCurrentWeekNo(){
var currentDate = new Date();
var firstDay = new Date(currentDate.getFullYear(),0,1);
var dayms = 24 * 60 * 60 * 1000;
var numday = ((currentDate - firstDay) / dayms );
var weeks = Math.ceil((numday + firstDay.getDay() + 1) / 7);
return weeks;
}
function getWeekRangeOfWeek(year,weekNo){
var tmpDate = new Date("1/20/" + year);
var numOfDaysPastSinceLastMonday = tmpDate.getDay()-1;
tmpDate.setDate(tmpDate.getDate() - numOfDaysPastSinceLastMonday);
var weekNoToday = tmpDate.getWeek();
var weeksInFuture = weekNo - weekNoToday;
tmpDate.setDate(tmpDate.getDate() + (7 * weeksInFuture) );
var rangeFrom = tmpDate.getDate() + "/" + MONTH[tmpDate.getMonth()].key;
tmpDate.setDate(tmpDate.getDate() + 6);
var rangeTo = tmpDate.getDate() + "/" + MONTH[tmpDate.getMonth()].key ;
return weekNo + "_#_" + rangeFrom + "_#_" + rangeTo ;
}
function fillinWeek(weekId,year){
$("#" + weekId).get(0).options.length = 0;
var weeksOfYear = getWeeksOfYear(year);
var weeks = [];
for(var i=0;i<weeksOfYear;i++){
weeks.push(getWeekRangeOfWeek(year,i+1));
}
for(var j=0;j<weeks.length;j++){
var week = weeks[j].split("_#_");
$("#" + weekId).append("<option value="+week[0]+">"+week[0] + "(" + week[1]+"-"+week[2]+")</option>");
}
}
function fillinWeeks(year,weekIds){
for (var i=0;i<weekIds.length;i++){
fillinWeek(weekIds[i],year);
}
}

PS:这里再为大家推荐几款比较实用的天数计算在线工具供大家使用:

在线日期/天数计算器:
http://tools.jb51.net/jisuanqi/date_jisuanqi

在线日期计算器/相差天数计算器:
http://tools.jb51.net/jisuanqi/datecalc

在线日期天数差计算器:
http://tools.jb51.net/jisuanqi/onlinedatejsq

在线天数计算器:
http://tools.jb51.net/jisuanqi/datejsq

更多关于JavaScript相关内容感兴趣的读者可查看本站专题:《JavaScript时间与日期操作技巧总结》、《JavaScript+HTML5特效与技巧汇总》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》及《JavaScript数学运算用法总结

希望本文所述对大家JavaScript程序设计有所帮助。

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标签:  JS 时间 年月日 星期