判断日期是否能跨月查询的js代码

function checkDate(startDate, endDate, num, flag) { if(startDate == null || endDate == null) { popwin.info('提示','日期不可为空'); return false; } if(startDate == '' || endDate == '') { popwin.info('提示','请输入查询日期'); return false; } var start_date = startDate + " 00:00"; var end_date = endDate + " 00:00"; start_date = new Date(start_date.replace(/-/g, "https://www.jb51.net/")); end_date = new Date(end_date.replace(/-/g, "https://www.jb51.net/")); if(start_date > end_date){ popwin.info('提示','截止日期不能小于起始日期'); return false; } // 获取num天以后的日期 var currentDate = new Date(); currentDate.setDate(currentDate.getDate() + num); if(end_date > currentDate) { popwin.info('提示','截止日期不能大于' + num + '天之后的日期'); return false; } // 判断是否跨月查询 if(flag == false) { if(start_date.getMonth() != end_date.getMonth()) { popwin.info('提示','该查询不支持跨月查询'); return false; } } }