JS生成當前月份包括最近12個月內的月份

   var last_year_month = function() {
        var result = [];
        for(var i = 0; i < 12; i++) {
            var d = new Date();
            d.setDate(1);
            d.setMonth(d.getMonth() - i);
            var m = d.getMonth() + 1;

            m = m < 10 ? "0" + m : m;
            //在這里可以自定義輸出的日期格式
            result.push(d.getFullYear() + "-" + m);
            //result.push(d.getFullYear() + "年" + m + '月');
        }

        return result;
    };

    var time=new Array();

    //生成前12個月日期下拉框
    for(var allinfo = last_year_month(), i = 0; i < allinfo.length; i++) {
        time[i]=allinfo[i];
    }

結果:

["2019-04", "2019-03", "2019-02", "2019-01", "2018-12", "2018-11", "2018-10", "2018-09", "2018-08", "2018-07", "2018-06", "2018-05"]