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  • 日期操作转载

    /**
    * 获取本周、本季度、本月、上月的开端日期、停止日期
    */
    var now = new Date(); //当前日期
    var nowDayOfWeek = now.getDay(); //今天本周的第几天
    var nowDay = now.getDate(); //当前日
    var nowMonth = now.getMonth(); //当前月
    var nowYear = now.getYear(); //当前年
    nowYear += (nowYear < 2000) ? 1900 : 0; //
    
    var lastMonthDate = new Date(); //上月日期
    lastMonthDate.setDate(1);
    lastMonthDate.setMonth(lastMonthDate.getMonth()-1);
    var lastYear = lastMonthDate.getYear();
    var lastMonth = lastMonthDate.getMonth();
    
    //格局化日期:yyyy-MM-dd
    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);
    }
    
    //获得某月的天数
    function getMonthDays(myMonth){
    var monthStartDate = new Date(nowYear, myMonth, 1);
    var monthEndDate = new Date(nowYear, myMonth + 1, 1);
    var days = (monthEndDate - monthStartDate)/(1000 * 60 * 60 * 24);
    return days;
    }
    
    //获得本季度的开端月份
    function getQuarterStartMonth(){
    var quarterStartMonth = 0;
    if(nowMonth<3){
    quarterStartMonth = 0;
    }
    if(2<nowMonth && nowMonth<6){
    quarterStartMonth = 3;
    }
    if(5<nowMonth && nowMonth<9){
    quarterStartMonth = 6;
    }
    if(nowMonth>8){
    quarterStartMonth = 9;
    }
    return quarterStartMonth;
    }
    
    //获得本周的开端日期
    function getWeekStartDate() {
    var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);
    return formatDate(weekStartDate);
    }
    
    //获得本周的停止日期
    function getWeekEndDate() {
    var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek));
    return formatDate(weekEndDate);
    }
    
    //获得本月的开端日期
    function getMonthStartDate(){
    var monthStartDate = new Date(nowYear, nowMonth, 1);
    return formatDate(monthStartDate);
    }
    
    //获得本月的停止日期
    function getMonthEndDate(){
    var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth));
    return formatDate(monthEndDate);
    }
    
    //获得上月开端时候
    function getLastMonthStartDate(){
    var lastMonthStartDate = new Date(nowYear, lastMonth, 1);
    return formatDate(lastMonthStartDate);
    }
    
    //获得上月停止时候
    function getLastMonthEndDate(){
    var lastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth));
    return formatDate(lastMonthEndDate);
    }
    
    //获得本季度的开端日期
    function getQuarterStartDate(){
    
    var quarterStartDate = new Date(nowYear, getQuarterStartMonth(), 1);
    return formatDate(quarterStartDate);
    }
    
    //或的本季度的停止日期
    function getQuarterEndDate(){
    var quarterEndMonth = getQuarterStartMonth() + 2;
    var quarterStartDate = new Date(nowYear, quarterEndMonth, getMonthDays(quarterEndMonth));
    return formatDate(quarterStartDate);
    } 
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  • 原文地址:https://www.cnblogs.com/TzH-Sky/p/4708545.html
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