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。
我要评论
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[i].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：
在线日期计算器/相差天数计算器：
在线日期天数差计算器：
在线天数计算器：
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。
如对本文有疑问， 点击进行留言回复！！
MFC的静态库.lib、动态库.dll（包含引入库.lib）以及Unicode库示例
CTF 刷题记录（一） 白云新闻搜索（手动与自动化SQL注入）
javascript如何使用函数random来实现课堂随机点名方法详解
网友评论