惯例直接上代码:

1 //默认投保日期起,默认3天内的 2     function start() { 3         var today = new Date(new Date() - 2 * 24 * 60 * 60 * 1000); 4         var h = today.getFullYear(); 5         var m = today.getMonth() + 1; 6         var d = today.getDate(); 7         m = m < 10 ? "0" + m : m; 8         d = d < 10 ? "0" + d : d; 9         return h + "-" + m + "-" + d + " 00:00:00";10     }

获取就是当前时间算起,3天前凌晨0点0分0秒的日期