1
を時間ソート最適化（preparedDataであります配列は、開始および終了時間間隔情報のみを保持する）。はIを同じ情報を保持sortedData配列に <strong>lastAccessedTime</strong>日時情報を持つオブジェクトの配列をソートします小さな機能を開発したが、半分の時間間隔で置かれた半時間間隔のアレイに
私の質問です：期待した結果を達成するための最良の方法ですか？データ配列が大きくなるにつれ、prepareData（）は遅くなるので、準備をする時間を最小限に抑える必要があります。
1 /瞬間を削除し、代わりに日付関数を使用してみてください： はロジックに最適化するhttps://jsfiddle.net/mtcljiljana/nvfq6h9h/
const data = [{"lastAccessedTime":"2017-11-16T07:15:41Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T07:32:42Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T07:32:47Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:36:02Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:36:55Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:37:28Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:39:48Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:40:47Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:42:31Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:44:06Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:46:04Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:46:43Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:50:31Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:52:54Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T07:53:53Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:14:00Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:14:44Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:16:20Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:17:32Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:19:21Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:20:13Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:20:59Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:22:59Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:25:14Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T08:26:17Z","path":"/concurrent_users.htm"},{"id":913,"cookieId":"WfP2r2jiq4xAKo9YziaV5winTllwY5HL","creationTime":"2017-11-16T08:47:15Z","lastAccessedTime":"2017-11-16T08:47:15Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T08:49:47Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:12:39Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:24:25Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T09:26:15Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:28:10Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:28:53Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:30:49Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:31:48Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:34:01Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:43:47Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:44:21Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:44:30Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T09:44:34Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:44:48Z","path":"/"},{"lastAccessedTime":"2017-11-16T09:44:54Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T09:44:56Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:45:09Z","path":"/"},{"lastAccessedTime":"2017-11-16T09:45:14Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T09:45:16Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:45:30Z","path":"/"},{"lastAccessedTime":"2017-11-16T09:45:35Z","path":"/login.htm"},{"lastAccessedTime":"2017-11-16T09:45:38Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:49:31Z","path":"/settings/license.htm"},{"lastAccessedTime":"2017-11-16T09:50:47Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:50:57Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:51:32Z","path":"/settings/license.htm"},{"lastAccessedTime":"2017-11-16T09:52:06Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:58:55Z","path":"/concurrent_users.htm"},{"lastAccessedTime":"2017-11-16T09:59:12Z","path":"/connections/qc.htm"},{"lastAccessedTime":"2017-11-16T09:59:22Z","path":"/connections/rally.htm"},{"lastAccessedTime":"2017-11-16T10:07:10Z","path":"/connections/rally.htm"},{"lastAccessedTime":"2017-11-16T10:11:21Z","path":"/connections/rally.htm"},{"lastAccessedTime":"2017-11-16T10:22:48Z","path":"/connections/rally.htm"},{"lastAccessedTime":"2017-11-16T10:30:27Z","path":"/connections/rally.htm"},{"lastAccessedTime":"2017-11-16T10:34:10Z","path":"/connections/rally.htm"}];
const prepareData = (data) => {
const sortedData = [];
const startDate = [];
const endDate = [];
// transform GMT to local time
data.forEach(d => {
d.lastAccessedTime = moment(d.lastAccessedTime).format('YYYY-MM-DD HH:mm:ss');
});
// sort dates in ascending order
data.sort((a, b) => moment(a.lastAccessedTime) - moment(b.lastAccessedTime));
data.forEach(d => {
const start = moment(d.lastAccessedTime);
let put = sortedData;
let endMinutes;
let startMinutes;
if (start.minute() < 30) {
endMinutes = 30 - start.minute();
startMinutes = -start.minute();
} else {
endMinutes = 60 - start.minute();
startMinutes = 30 - start.minute();
};
const startTime = moment(start)
.add(startMinutes, 'minutes')
.add(-start.seconds(), 'seconds')
.format('YYYY-MM-DD HH:mm:ss');
const endTime = moment(start)
.add(endMinutes, 'minutes')
.add(-start.seconds(), 'seconds')
.format('YYYY-MM-DD HH:mm:ss');
sortedData.forEach(itm2 => {
itm2.forEach(itm3 => {
const date = moment(itm3.lastAccessedTime);
const min = moment(startTime);
const max = moment(endTime);
if (date < max && date > min) {
put = itm2;
}
});
});
if (put === sortedData) {
startDate.push(startTime);
endDate.push(endTime);
put.push([d]);
} else {
put.push(d);
};
});
const preparedData = sortedData.map((data, i) => {
const object = {
startDate: startDate[i],
endDate: endDate[i]
};
return object;
});
console.log(JSON.stringify(sortedData));
console.log(JSON.stringify(preparedData));
};
prepareData(data);
指名手配結果の小さな例を追加してください。 –
現在の結果は必要な結果です。より少ないコード行でより速く同じ結果を達成しようとしています –
あなたは2つのconsole.log出力を見ることができます –