javascript - 按照周將資料分類問題

Hi,小弟我現在有一個資料,是按照每天計算出來的tp.對應的資料為

["2011-1-1","2011-1-2","2011-1-3","2011-1-4",...]

每一天對應的資料(tp)

[1,2,2,3,...]

那麼現在要講這些日期按照周分類,沒就是計算的結果為

["2011年第一周",...]

資料為

[8,...]

那麼現在該怎麼做呢?? 用什麼語言實現都無所謂~~~~

回複內容：

Hi,小弟我現在有一個資料,是按照每天計算出來的tp.對應的資料為

["2011-1-1","2011-1-2","2011-1-3","2011-1-4",...]

每一天對應的資料(tp)

[1,2,2,3,...]

那麼現在要講這些日期按照周分類,沒就是計算的結果為

["2011年第一周",...]

資料為

[8,...]

那麼現在該怎麼做呢?? 用什麼語言實現都無所謂~~~~

 $date) {    if($ret_list[date('W', strtotime($date))]) {        $ret_list[date('W', strtotime($date))] += $num_list[$k];    } else {        $ret_list[date('W', strtotime($date))] = $num_list[$k];    }}echo("日期數組：
");print_r($date_list);echo("
");echo("數值數組：
");print_r($num_list);echo("
");echo("按周統計數組（數組的鍵就是今年的第幾周）：
");print_r($ret_list);

重點在於date函數的使用，如何擷取日期屬於年度的第幾周，看看php的doc吧。

var datas = ["2011-1-1","2011-1-2","2011-1-3","2011-1-4",...]function toWeekAarry(data){    var dateArr        ,dateObj        ,currWeek = 0;        ,weeks = [];    //假設樓主的資料不是連續的,而且不是全部元素合法    datas.filter(dateStr=>typeof dateStr==="string").forEach(dateStr=>{        dateArr = dateStr.split("-")        if(dateArr.length===3){            dateObj = new Date(dateArr[0],dateArr[1],dateArr[2])            currWeek = getWeekOfDate(dateObj)            if(!weeks[])weeks[currWeek]=[]            weeks[currWeek].push(date);        }    })        retrun weeks.map(week=>if(!week)week=[]);}//返回結果是一個按照第幾周組成的複合數組。

getWeekOfDate方法來自 http://stackoverflow.com/questions/9045868/javascript-date-getweek

function getWeekOfDate (dateObj,dowOffset) {    dowOffset = typeof(dowOffset) == 'int' ? dowOffset : 0; //default dowOffset to zero    var newYear = new Date(dateObj.getFullYear(),0,1);    var day = newYear.getDay() - dowOffset; //the day of week the year begins on    day = (day >= 0 ? day : day + 7);    var daynum = Math.floor((dateObj.getTime() - newYear.getTime() -     (dateObj.getTimezoneOffset()-newYear.getTimezoneOffset())*60000)/86400000) + 1;    var weeknum;    //if the year starts before the middle of a week    if(day < 4) {        weeknum = Math.floor((daynum+day-1)/7) + 1;        if(weeknum > 52) {            nYear = new Date(dateObj.getFullYear() + 1,0,1);            nday = nYear.getDay() - dowOffset;            nday = nday >= 0 ? nday : nday + 7;            /*if the next year starts before the middle of              the week, it is week #1 of that year*/            weeknum = nday < 4 ? 1 : 53;        }    }    else {        weeknum = Math.floor((daynum+day-1)/7);    }    return weeknum;};

1）計算日期對應的周資訊

function getWeekOfYear(date){    var year=date.getFullYear();    var baseDate=new Date(year,0,1);    var baseWeekDay=testDate.getDay();    var dateWeekDay=date.getDay();    if(baseWeekDay==0) baseWeekDay=7;    if(dateWeekDay==0) dateWeekDay=7;    var weekOfYear=Math.round(((date.getTime()-dateWeekDay*3600*24*1000)-(baseDate.getTime()-baseWeekDay*3600*24*1000))/(24*3600*1000)/7);    return weekOfYear+1;}

2）將在同一周的資料相加

var dateArray=["2011-1-1","2011-1-2","2011-1-3","2014-10-01",'2014-01-01','2015-11-11'];var dateTpArray=[9,8,7,6,121323445,23492742742374324];var dateReg=/^(\d{4})\-(\d{1,2})\-(\d{1,2})$/;var reduceResult={};dateArray.forEach(function(item,index){    var matchResult=dateReg.exec(item);    console.log('%s %s %s',matchResult[1],matchResult[2],matchResult[3]);    var weekOfYear=getWeekOfYear(new Date(parseInt(matchResult[1],10),parseInt(matchResult[2],10)-1,parseInt(matchResult[3],10)));    if(!reduceResult[matchResult[1]+'_'+weekOfYear]){        reduceResult[matchResult[1]+'_'+weekOfYear]={            desc:matchResult[1]+'第'+weekOfYear+'周',            tps:0        }    }    reduceResult[matchResult[1]+'_'+weekOfYear].tps=reduceResult[matchResult[1]+'_'+weekOfYear].tps+dateTpArray[index];});var weekOfYearDescArray=[];var weekofYearTpArray=[];for(var prop in reduceResult){    if(reduceResult.hasOwnProperty((prop))){        weekOfYearDescArray.push(reduceResult[prop].desc);        weekofYearTpArray.push(reduceResult[prop].tps);    }}console.log(weekOfYearDescArray);console.log(weekofYearTpArray);

