js判斷時間間隔

 

js判斷，如果某條件不為空(accNo)，則起始日期與結束日期不超過半年，若為空，則起始日期與結束日期不超過一年

 

function checkDate(){
        var accNo = $("#accNo").val();
        if(null == accNo || accNo == ''){
            var pattern = /(\d{4})(\d{2})(\d{2})/;
            var beginTimeStr = $("#startDate").val().replace(pattern, '$1-$2-$3');
            var endTimeStr = $("#endDate").val().replace(pattern, '$1-$2-$3');
            var beginTime = new Date(beginTimeStr).getTime();
            var endTime = new Date(endTimeStr).getTime();
            sum = endTime - beginTime;
            if(endTime < beginTime){
                alertInfo("起始日期不能大於終止日期！");
                return false;
            }
            if(parseInt(Math.abs(beginTime-endTime)/1000/60/60/24) > 183){
                alertInfo("起始時間與終止時間不能超過183天！");
                return false;
            }
        }else{
            var pattern = /(\d{4})(\d{2})(\d{2})/;
            var beginTimeStr = $("#startDate").val().replace(pattern, '$1-$2-$3');
            var endTimeStr = $("#endDate").val().replace(pattern, '$1-$2-$3');
            var beginTime = new Date(beginTimeStr).getTime();
            var endTime = new Date(endTimeStr).getTime();
            sum = endTime - beginTime;
            if(endTime < beginTime){
                alertInfo("起始日期不能大於終止日期！");
                return false;
            }
            if(parseInt(Math.abs(beginTime-endTime)/1000/60/60/24) > 365){
                alertInfo("起始時間與終止時間不能超過365天！");
                return false;
            }
        }
        
    }