function getTheSort(year) {
            var theYear = new Date(year);
            var y = theYear.getFullYear();
            var flag = 1;
            if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0) {
                flag = 0
            }
            var m = theYear.getMonth();
            var d = theYear.getDate();
            console.log(m);
            console.log(d);
            var days = 0;
            var theDate = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
            if (m == 0) {
                return d;
            } else {
                for (var i = 0; i < m; i++) {
                    days += theDate[i];
                }
            }
            if (m > 1) {
                if (flag == 0) {
                    days++;
                }
                return d + days;
            }
            if (m == 1) {
                return d + days;
            }
        }
        var sort = getTheSort('2020-2-24');
        console.log('该日是当年的第' + sort + '天');