在 @user568109 的回答基础上扩展,该回答已经被正确并且赞同。这里提供一个函数来完成所有操作,为了举例说明,使用了一个更大的数组:
var groupByTimePeriod = function (obj, timestamp, period) {
var objPeriod = {};
var oneDay = 24 * 60 * 60 * 1000;
for (var i = 0; i < obj.length; i++) {
var d = new Date(obj[i][timestamp] * 1000);
if (period == 'day') {
d = Math.floor(d.getTime() / oneDay);
} else if (period == 'week') {
d = Math.floor(d.getTime() / (oneDay * 7));
} else if (period == 'month') {
d = (d.getFullYear() - 1970) * 12 + d.getMonth();
} else if (period == 'year') {
d = d.getFullYear();
} else {
console.log('groupByTimePeriod: You have to set a period! day | week | month | year');
}
objPeriod[d] = objPeriod[d] || [];
objPeriod[d].push(obj[i]);
}
return objPeriod;
};
var eventsArray = [{ id: 1, date: 1317906596 }, { id: 2, date: 1317908605 }, { id: 3, date: 1317909229 }, { id: 4, date: 1317909478 }, { id: 5, date: 1317909832 }, { id: 6, date: 1317979141 }, { id: 7, date: 1317979232 }, { id: 8, date: 1317986965 }, { id: 9, date: 1318582119 }, { id: 10, date: 1318595862 }, { id: 11, date: 1318849982 }, { id: 12, date: 1318855706 }, { id: 13, date: 1318929018 }, { id: 14, date: 1318933265 }, { id: 15, date: 1318940511 }, { id: 16, date: 1318945096 }, { id: 17, date: 1319017541 }, { id: 18, date: 1319527136 }, { id: 19, date: 1318582119 }, { id: 20, date: 1318595862 }, { id: 21, date: 1318582119 }, { id: 22, date: 1318595862 }, { id: 23, date: 1319713399 }, { id: 24, date: 1320053428 }, { id: 25, date: 1320333481 }, { id: 26, date: 1320832755 }, { id: 27, date: 1321012378 }, { id: 28, date: 1321280993 }, { id: 29, date: 1321347659 }, { id: 30, date: 1321350476 }, { id: 31, date: 1321369307 }, { id: 32, date: 1321369614 }, { id: 33, date: 1321610123 }, { id: 34, date: 1321613205 }, { id: 35, date: 1321617250 }, { id: 36, date: 1321626603 }, { id: 37, date: 1321865808 }, { id: 38, date: 1321876609 }, { id: 39, date: 1321877598 }, { id: 40, date: 1321877832 }, { id: 41, date: 1321953322 }, { id: 42, date: 1322061969 }, { id: 43, date: 1322142603 }, { id: 44, date: 1322211686 }, { id: 45, date: 1322213793 }, { id: 46, date: 1322214569 }, { id: 47, date: 1322482817 }, { id: 48, date: 1322663742 }, { id: 49, date: 1322664267 }, { id: 50, date: 1322747231 }, { id: 51, date: 1322819964 }, { id: 52, date: 1323358224 }, { id: 53, date: 1323681272 }, { id: 54, date: 1323695093 }, { id: 55, date: 1323696589 }, { id: 56, date: 1323763763 }, { id: 57, date: 1322819964 }, { id: 58, date: 1323681272 }, { id: 59, date: 1323851164 }, { id: 60, date: 1323853123 }, { id: 61, date: 1323854271 }, { id: 62, date: 1323858072 }, { id: 63, date: 1325690573 }, { id: 64, date: 1325751893 }, { id: 65, date: 1325760204 }, { id: 66, date: 1325769098 }, { id: 67, date: 1325769981 }, { id: 68, date: 1325771632 }, { id: 69, date: 1325776473 }, { id: 70, date: 1325837346 }, { id: 71, date: 1326110199 }, { id: 72, date: 1326793097 }, { id: 73, date: 1326878182 }, { id: 74, date: 1326881341 }, { id: 75, date: 1326975873 }, { id: 76, date: 1326985667 }, { id: 77, date: 1327047585 }, { id: 78, date: 1327062945 }, { id: 79, date: 1327063660 }, { id: 80, date: 1327322844 }, { id: 81, date: 1327326904 }, { id: 82, date: 1327329215 }, { id: 83, date: 1327397042 }, { id: 84, date: 1327399839 }, { id: 85, date: 1327401818 }, { id: 86, date: 1327407161 }, { id: 87, date: 1327419420 }, { id: 88, date: 1327570243 }, { id: 89, date: 1327578536 }, { id: 90, date: 1327584554 }, { id: 91, date: 1327914616 }, { id: 92, date: 1327917019 }, { id: 93, date: 1327931685 }, { id: 94, date: 1327933025 }, { id: 95, date: 1327934772 }, { id: 96, date: 1327947074 }, { id: 97, date: 1328626734 }, { id: 98, date: 1328626734 }, { id: 99, date: 1330070074 }, { id: 100, date: 1330073135 }, { id: 101, date: 1330073259 }, { id: 102, date: 1330332445 }, { id: 103, date: 1330351925 }, { id: 104, date: 1330420928 }, { id: 105, date: 1330423209 }, { id: 106, date: 1330437337 }, { id: 107, date: 1330439446 }];
var objPeriodDay = groupByTimePeriod(eventsArray, 'date', 'day');
var objPeriodWeek = groupByTimePeriod(eventsArray, 'date', 'week');
var objPeriodMonth = groupByTimePeriod(eventsArray, 'date', 'month');
var objPeriodYear = groupByTimePeriod(eventsArray, 'date', 'year');
console.log(objPeriodDay);
console.log(objPeriodWeek);
console.log(objPeriodMonth);
console.log(objPeriodYear);
这里有一个相关的演示(您需要打开控制台才能看到输出)。
如您在演示中所见,4个对象的键将如下:
objPeriodDay
: 自1970年1月1日以来的天数
objPeriodWeek
: 相对于1970年1月1日第一周的周数
objPeriodMonth
: 自1970年1月1日以来的月数
objPeriodYear
: 年份
请注意,所有这四种变化都会给您提供独特的键。例如,月份将给您“2011年12月”(以自1970年1月1日以来的月份为形式),而不仅仅是“12月”。
moment(1387271989749).week()
。 - punund