function getInfo(year, month) {       var getInfo = function (year, month) {                var d = new Date();                d.setFullYear(year, month - 1, 1);                var w1 = d.getDay();                if (w1 == 0) w1 = 7;                d.setFullYear(year, month, 0);                var dd = d.getDate();                if (w1 != 1) {                    var d1 = 7 - w1 + 2;                } else {                    d1 = 1;                }                var week_count = Math.ceil((dd - d1 + 1) / 7);                for (var i = 0; i < week_count; i++) {                    var monday = d1 + i * 7;                    var sunday = monday + 6;                    var from = year + "/" + month + "/" + monday;                    var to;                    if (sunday <= dd) {                        to = year + "/" + month + "/" + sunday;                    } else {                        d.setFullYear(year, month - 1, sunday);                        to = d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate();                    }                    var d11 = new Date(year + "-" + month + "-" + monday);                    var d2 = new Date(year + "-" + month + "-" + monday);                    d2.setMonth(0);                    d2.setDate(1);                    var rq = d11 - d2;                    var s1 = Math.ceil(rq / (24 * 60 * 60 * 1000));                    var s2 = Math.ceil(s1 / 7);                   console.log("第" + s2 + "周(" + from + " 到 " + to + ")"                    );                }            };    }    getInfo(‘2013‘,‘12‘);