//ajax()獲取 服務器時間
$(function(){
		$.ajax({
        type:"OPTIONS",
        url:"/",
        complete:function(x){
//              alert(x.getResponseHeader("Date"))

        var time = x.getResponseHeader("Date");
        var curDate = new Date(time);
        var year = curDate.getFullYear();
        var month = curDate.getMonth() + 1;
        var day = curDate.getDate();
        var hour = curDate.getHours();
        var minu = curDate.getMinutes();
        var seconds = curDate.getSeconds();
        var millsecond = curDate.getMilliseconds(); //獲取服務器毫秒數(0-999)
        if (month < 10) { month = ‘0‘ + month; }
        if (day < 10) { day = ‘0‘ + day; }
        if (hour < 10) { hour = ‘0‘ + hour; }
        if (minu < 10) { minu = ‘0‘ + minu; }
        if (millsecond < 10) { millsecond = ‘0‘ + millsecond; }
        if (seconds < 10) { seconds = ‘0‘ + seconds; }
            var monthtime=parseInt(month)-1;
                if(monthtime==0){
                	year=parseInt(year)-1;
                	monthtime=12;
                }  //設置獲取 前一個月
                if(monthtime<10){
                	monthtime=‘0‘+monthtime;
                }
 

                 $("#formTime").val(year+‘-‘+monthtime);
                  $(‘.report-data‘).html(year+‘-‘+monthtime);
                
        }
    })
})

獲取 服務器時間（年+上一個月）