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| function formatDate(date) { var myyear = date.getFullYear(); var mymonth = date.getMonth()+1; var myweekday = date.getDate(); if(mymonth < 10){ mymonth = "0" + mymonth; } if(myweekday < 10){ myweekday = "0" + myweekday; } return (myyear+"-"+mymonth + "-" + myweekday); }
function getMonthDays(paraYear,paraMonth){ var monthStartDate=new Date(paraYear, paraMonth, 1); var monthEndDate=new Date(paraYear, paraMonth + 1, 1); var days=(monthEndDate-monthStartDate)/(1000*60*60*24); return days; }
function getWeekStartDate(paraYear,paraMonth,paraDay,paraDayOfWeek) { var weekStartDate = new Date(paraYear, paraMonth, paraDay + 1 - paraDayOfWeek); return formatDate(weekStartDate); }
function getWeekEndDate(paraYear,paraMonth,paraDay,paraDayOfWeek) { var weekEndDate = new Date(paraYear, paraMonth, paraDay + (7 - paraDayOfWeek)); return formatDate(weekEndDate); }
function getMonthStartDate(paraYear,paraMonth){ var monthStartDate = new Date(paraYear, paraMonth, 1); return formatDate(monthStartDate); }
function getMonthEndDate(paraYear,paraMonth){ var monthEndDate = new Date(paraYear,paraMonth, getMonthDays(paraYear,paraMonth)); return formatDate(monthEndDate); }
function getLastMonthStartDate(paraYear, lastMonth){ var lastMonthStartDate = new Date(paraYear, lastMonth, 1); return formatDate(lastMonthStartDate); }
function getLastMonthEndDate(paraYear, lastMonth, lastMonth){ var lastMonthEndDate = new Date(paraYear, lastMonth, getMonthDays(lastMonth)); return formatDate(lastMonthEndDate); }
function getQuarterStartDate(paraYear,paraSeason){ switch (paraSeason){ case '1' : return paraYear+"-01-01"; case '2' : return paraYear+"-04-01"; case '3' : return paraYear+"-07-01"; case '4' : return paraYear+"-10-01"; } }
function getQuarterEndDate(paraYear,paraSeason){ switch (paraSeason){ case '1' : return paraYear+"-03-31"; case '2' : return paraYear+"-06-30"; case '3' : return paraYear+"-09-30"; case '4' : return paraYear+"-12-31"; } }
function getBeginDateOfWeek(paraYear, weekIndex){ var firstDay = GetFirstWeekBegDay(paraYear); var time=(weekIndex-1)*7*24*3600000; var beginDay = firstDay; beginDay.setTime(firstDay.valueOf()+time); return formatDate(beginDay); }
function getEndDateOfWeek(paraYear, weekIndex){ var firstDay = GetFirstWeekBegDay(paraYear); var time=(weekIndex-1)*7*24*3600000; var weekTime = 6*24*3600000; var endDay = firstDay; endDay.setTime(firstDay.valueOf()+weekTime+time); return formatDate(endDay); }
function GetWeekIndex(dateobj) { var firstDay = GetFirstWeekBegDay(dateobj.getFullYear()); if (dateobj < firstDay) { firstDay = GetFirstWeekBegDay(dateobj.getFullYear() - 1); } d = Math.floor((dateobj.valueOf() - firstDay.valueOf()) / 86400000); return Math.floor(d / 7) + 1; }
function GetFirstWeekBegDay(year) { var tempdate = new Date(year, 0, 1); var temp = tempdate.getDay(); if (temp == 1){ return tempdate; } temp = temp == 0 7 : temp; tempdate = tempdate.setDate(tempdate.getDate() + (8 - temp)); return new Date(tempdate); }
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