js 获取时间（前10日、前10月、前10季）

来源：互联网发布：知乎总是加载不出来编辑：程序博客网时间：2024/05/07 20:34

很久很久以前···也就是前几天经理让我实现一个获取前十天、前十月、前十个季度的功能，百度一下没有结果，没办法自己写了一个，再此发到网上，希望广大同行能多多指点！

//声明时间    var myDate = new Date();    var endDate = new Date(myDate);    var day;    //日    var month;  //月    var year;   //年    if(type == "ri") {        dateStr = "";        for(var i=0; i<10; i++) {            //如果当日时间差<1时,则获取前一个月的天数            if((myDate.getDate()-i) < 1) {                //获取前一个月的最后一天                endDate.setMonth(myDate.getMonth());                endDate.setDate(0);                //前月最后一天  + 相差天数(此天数是负数) = 实际应显示天数                 day = ((endDate.getDate()+(myDate.getDate()-i))<10?"0":"")+(endDate.getDate()+(myDate.getDate()-i));                //如果获取月份为0，则取前一年的最后一个月                if(myDate.getMonth() == 0) {                    month = 12;                    year = myDate.getFullYear()-1;                } else {                    month = ((myDate.getMonth())<10?"0":"")+(myDate.getMonth());                    year = myDate.getFullYear();                }            } else {                day = ((myDate.getDate()-i)<10?"0":"")+(myDate.getDate()-i);                month = ((myDate.getMonth()+1)<10?"0":"")+(myDate.getMonth()+1);                year = myDate.getFullYear();            }            if(i > 0) {                dateStr += ",";            }            dateStr += year+"-"+month+"-"+day;        }    } else if(type == "yue") {        dateStr = "";        for(var i=0; i<10; i++) {            //获取当天            day = (myDate.getDate()<10?"0":"")+myDate.getDate();            //获取上一个月份            if((myDate.getMonth()+1-i) < 1) {                month = ((12+(myDate.getMonth()+1-i))<10?"0":"")+(12+(myDate.getMonth()+1-i));                year = myDate.getFullYear()-1;            } else {                month = ((myDate.getMonth()+1-i)<10?"0":"")+(myDate.getMonth()+1-i);                year = myDate.getFullYear();            }            if(i > 0) {                dateStr += ",";            }            dateStr += year+"-"+month+"-"+day;        }    } else if(type == "ji") {        dateStr = "";        for(var i=0; i<10; i++) {            day = (myDate.getDate()<10?"0":"")+myDate.getDate();            var season;            if((myDate.getMonth()+1) <= 3) {                month = "01";                year = myDate.getFullYear() + "";                myDate = new Date((myDate.getFullYear()-1)+"-12-"+day);                season = "1";            } else if((myDate.getMonth()+1) <= 6) {                month = "04";                year = myDate.getFullYear() + "";                myDate = new Date(year+"-03-"+day);                season = "2";            } else if((myDate.getMonth()+1) <= 9) {                month = "07";                year = myDate.getFullYear() + "";                myDate = new Date(year+"-06-"+day);                season = "3";            } else if((myDate.getMonth()+1) <= 12) {                month = "10";                year = myDate.getFullYear() + "";                myDate = new Date(year+"-09-"+day);                season = "4";            }            if(i > 0) {                dateStr += ",";            }            dateStr += year+"-"+month+"-"+day;        }    }

季度方面我为了方便获取的是每个季度的第一月也就是1、4、7、10月份，传给后台啊，还是干啥的处理在每个月的基础上加3就OK了

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