初始代码是这样的，请问怎么改，一直改一直出错，要不然就是出不来数据
            var curDate = new Date();
            var preDate = new Date(curDate.getTime() - 24 * 60 * 60 * 1000);
            var firstDate = new Date();
            var tmpMonth = firstDate.getMonth();
            if (tmpMonth == 0) {
                firstDate.setMonth(tmpMonth - 12);
           }
            else {
                firstDate.setMonth(0);
            }
            firstDate.setDate(1);
            $("#StartTime").val((preDate).Format("yyyy-MM-dd"));
            $("#EndTime").val((preDate).Format("yyyy-MM-dd"));

你这个是什么框架的控件？

是ligerui框架里的。我改成这样了
            var curDate = new Date();
            var preDate = new Date(curDate.getTime() - 24 * 60 * 60 * 1000);
            var tmpMonth = curDate.getMonth();
            var startDate = new Date();
            startDate.setMonth(curDate.getMonth()-1);
            if (tmpMonth == 2) {
                $('.date').datepicker({dateFormat: "yy-mm-25"});
            }
            else {
                $('.date').datepicker({dateFormat: "yy-mm-28"});
            };
            $("#StartTime").val((startDate).Format("yyyy-MM-dd"));
            $("#EndTime").val((preDate).Format("yyyy-MM-dd"));
但是在执行过程中if语句没有执行到，数据没出来