• JS获取本周、本季度、本月、上月的开端日期、停止日期


    Js代码   
    /** 
    * 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/baixc/p/4425002.html
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