JS实现处理时间，年月日，星期的公共方法示例

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);
};

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 ){
      
      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];
}

function formatDateDDMMYY(dateTime){
  var ymd = dateTime.split(" ")[0];
  var dateArray = ymd.split("-");
  return dateArray[2]+"."+dateArray[1]+"."+dateArray[0].substring(2);
}

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){
  for (var i=0;i

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。