如何在javascript中按小时/6小时/日/周/月/年对日期对象进行分组
如何在javascript中按小时/6小时/日/周/月/年对日期对象进行分组
提问于 2019-02-07 11:27:02
我有10年的记录。因此API将返回我需要的数组，根据日期时间戳对数组进行分组。用户可以选择分组选项作为
- 小时
- 6小时(每天)
- 天
- 星期
- 月份
- 年
数据示例
[{
"x": "2019-02-05T14:28:45.540Z",
"y": 0.18809978382007495
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.42347719862654404
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.365386421616013
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.49364744650351033
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.31133576985952016
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.5509062071104307
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.5556739085429424
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.6668348570127745
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.4908101365372941
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.6042127351503115
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.3725497529313371
}, {
"x": "2019-02-05T14:28:45.540Z",
"y": 0.29687095332790064
}, {
"x": "2018-02-07T11:19:19.034Z",
"y": 0
}]是否有按小时/日/周/月/年分组的通用解决方案？
示例输出我想要的.
for hour
{
"OCT 2th 2012 6AM": [
"2012-10-02 06:00:00",
"2012-10-10 06:03:51"
],
"NOV 11th 2012 AM": [
"2012-11-11 09:07:21",
"2012-11-10 09:03:51"
],
"OCT 6th 2013 2PM": [
"2013-10-07 02:07:02"
],
}每6小时一次
{
"OCT 6th 2012 first 6 hours": [
"2012-10-11 06:00:00",
],
"OCT 6th 2012 second 6 hours": [
"2012-10-10 06:03:51"
],
"NOV 6th 2012 AM": [
"2012-11-11 09:07:21",
"2012-111-10 09:03:51"
],
"OCT 6th 2013 2PM": [
"2013-10-07 02:07:02"
],
}日
{
"OCT 2th 2012": [
"2012-10-2 06:00:00",
],
"OCT 10th 2012": [
"2012-10-10 06:03:51"
],
"NOV 11th 2012": [
"2012-11-11 09:07:21",
"2012-11-10 09:03:51"
],
"OCT 7th 2013": [
"2013-10-07 02:07:02"
],
}.for week
{
"OCT 2012 week number": [
"2012-10-2 06:00:00",
],
"OCT 2012 week number": [
"2012-10-10 06:03:51"
],
}月
{
"OCT 2012 ": [
"2012-10-2 06:00:00",
],
"NOV 2012": [
"2012-11-10 06:03:51"
],
}回答 1
Stack Overflow用户
回答已采纳
发布于 2019-02-07 12:23:04
你可以按下面的方式做吗？
const data = [{"x":"2019-02-05T14:28:45.540Z","y":0.18809978382007495},{"x":"2019-02-05T14:28:45.540Z","y":0.42347719862654404},{"x":"2019-02-05T14:28:45.540Z","y":0.365386421616013},{"x":"2019-02-05T14:28:45.540Z","y":0.49364744650351033},{"x":"2019-02-05T14:28:45.540Z","y":0.31133576985952016},{"x":"2019-02-05T14:28:45.540Z","y":0.5509062071104307},{"x":"2019-02-05T14:28:45.540Z","y":0.5556739085429424},{"x":"2019-02-05T14:28:45.540Z","y":0.6668348570127745},{"x":"2019-02-05T14:28:45.540Z","y":0.4908101365372941},{"x":"2019-02-05T14:28:45.540Z","y":0.6042127351503115},{"x":"2019-02-05T14:28:45.540Z","y":0.3725497529313371},{"x":"2019-02-05T14:28:45.540Z","y":0.29687095332790064},{"x":"2018-02-07T11:19:19.034Z","y":0}];
const groups = (() => {
const byDay = (item) => moment(item.x).format('MMM DD YYYY'),
forHour = (item) => byDay(item) + ' ' + moment(item.x).format('hh a'),
by6Hour = (item) => {
const m = moment(item.x);
return byDay(item) + ' ' + ['first', 'second', 'third', 'fourth'][Number(m.format('k')) % 6] + ' 6 hours';
},
forMonth = (item) => moment(item.x).format('MMM YYYY'),
forWeek = (item) => forMonth(item) + ' ' + moment(item.x).format('ww');
return {
byDay,
forHour,
by6Hour,
forMonth,
forWeek,
};
})();
const currentGroup = 'forWeek';
console.log(_.groupBy(data, groups[currentGroup]));<script src="https://lodash.com/vendor/cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script>
<script src="https://momentjs.com/static/js/global.js"></script>
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/54572298
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