JS生成当前月份包括最近12个月内的月份

    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;
             //在这里可以自定义输出的日期格式
             result.push(d.getFullYear() + "-" + m);
             //result.push(d.getFullYear() + "年" + m + '月');
         }

         return result;
     };

     var time=new Array();

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

结果:

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