var cur = new Date(), unitDay = 24 * 60 * 60 * 1000; //月初 var sFirstDay = cur.getFullYear() + '/' + (cur.getMonth()+1) + '/01 00:00:00'; var firstDay = new Date(sFirstDay); //月末 var lastDay = new Date(sFirstDay); lastDay.setMonth(lastDay.getMonth() + 1); //月初 var firstDay = new Date(+cur); firstDay.setDate(1); //月末 var lastDay = new Date(+firstDay); lastDay.setMonth(lastDay.getMonth() + 1); lastDay.setDate(0); //生成當前月份 var lastDate = lastDay.getDate(); var firstTime = +firstDay; for (var i = 0; i < lastDate; i++) { dateList.push(new Date(firstTime + i * unitDay)); }