回答編集履歴
2
調整
test
CHANGED
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@@ -36,3 +36,24 @@
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36
36
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|天皇誕生日| | | | | |18/12/23|
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37
37
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|休日| | | | | |18/12/24|
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38
38
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39
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+
# カレンダーを利用した営業日計算
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仮に2018/1/1以降で良いなら、
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```javascript
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const eigyobi=[]
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const h=["2018/1/1","2018/1/8","2018/2/11","2018/2/12","2018/3/21","2018/4/29","2018/4/30","2018/5/3","2018/5/4","2018/5/5","2018/7/16","2018/8/11","2018/9/17","2018/9/23","2018/9/24","2018/10/8","2018/11/3","2018/11/23","2018/12/23","2018/12/24","2019/1/1","2019/1/14","2019/2/11","2019/3/21","2019/4/29","2019/4/30","2019/5/1","2019/5/2","2019/5/3","2019/5/4","2019/5/5","2019/5/6","2019/7/15","2019/8/11","2019/8/12","2019/9/16","2019/9/23","2019/10/14","2019/10/22","2019/11/3","2019/11/4","2019/11/23","2020/1/1","2020/1/13","2020/2/11","2020/2/23","2020/2/24","2020/3/20","2020/4/29","2020/5/3","2020/5/4","2020/5/5","2020/5/6","2020/7/23","2020/7/24","2020/8/10","2020/9/21","2020/9/22","2020/11/3","2020/11/23","2021/1/1","2021/1/11","2021/2/11","2021/2/23","2021/3/20","2021/4/29","2021/5/3","2021/5/4","2021/5/5","2021/7/22","2021/7/23","2021/8/8","2021/8/9","2021/9/20","2021/9/23","2021/11/3","2021/11/23","2022/1/1","2022/1/10","2022/2/11","2022/2/23","2022/3/21","2022/4/29","2022/5/3","2022/5/4","2022/5/5","2022/7/18","2022/8/11","2022/9/19","2022/9/23","2022/10/10","2022/11/3","2022/11/23","2023/1/1","2023/1/2","2023/1/9","2023/2/11","2023/2/23","2023/3/21","2023/4/29","2023/5/3","2023/5/4","2023/5/5","2023/7/17","2023/8/11","2023/9/18","2023/9/23","2023/10/9","2023/11/3","2023/11/23"];
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for(let i=new Date('2018/1/1').getTime();i<=new Date('2023/12/31').getTime();i+=60*60*24*1000){
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const j=new Date(i).toLocaleDateString();
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if(!h.includes(j) &&
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[1,2,3,4,5].includes(new Date(i).getDay()) &&
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!new RegExp('/(12/(29|30|31))|(1/(2|3))$').test(j)
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){
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eigyobi.push(j);
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}
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}
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const d="2023/1/23";
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const index=eigyobi.indexOf(d);
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for(var i=1;i<100;i++){
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console.log(`${i}営業日前は${new Date(eigyobi[index-i]).toLocaleDateString()}`);
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}
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```
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1
参考
test
CHANGED
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@@ -1,2 +1,38 @@
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1
1
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営業日で計算する場合は原則専用のカレンダーを用意しておく必要があります。
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2
2
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祝日だけでなく、振替休日やその組織の専用休（お盆や年末年始）もあるでしょうし
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# 参考
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|*|2023|2022|2021|2020|2019|2018|
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7
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|:--|:--|:--|:--|:--|:--|:--|
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|元日|23/01/01|22/01/01|21/01/01|20/01/01|19/01/01|18/01/01|
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9
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|休日|23/01/02| | | | | |
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10
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|成人の日|23/01/09|22/01/10|21/01/11|20/01/13|19/01/14|18/01/08|
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11
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|建国記念の日|23/02/11|22/02/11|21/02/11|20/02/11|19/02/11|18/02/11|
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12
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|休日| | | | | |18/02/12|
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13
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|天皇誕生日|23/02/23|22/02/23|21/02/23|20/02/23| | |
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14
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|休日| | | |20/02/24| | |
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15
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|春分の日|23/03/21|22/03/21|21/03/20|20/03/20|19/03/21|18/03/21|
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16
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|昭和の日|23/04/29|22/04/29|21/04/29|20/04/29|19/04/29|18/04/29|
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17
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|休日| | | | |19/04/30|18/04/30|
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18
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|休日| | | | |19/05/01| |
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19
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|休日| | | | |19/05/02| |
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|憲法記念日|23/05/03|22/05/03|21/05/03|20/05/03|19/05/03|18/05/03|
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21
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|みどりの日|23/05/04|22/05/04|21/05/04|20/05/04|19/05/04|18/05/04|
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22
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|こどもの日|23/05/05|22/05/05|21/05/05|20/05/05|19/05/05|18/05/05|
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23
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|休日| | | |20/05/06|19/05/06| |
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24
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|海の日|23/07/17|22/07/18|21/07/22|20/07/23|19/07/15|18/07/16|
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25
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|スポーツの日| | |21/07/23|20/07/24| | |
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|山の日|23/08/11|22/08/11|21/08/08|20/08/10|19/08/11|18/08/11|
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|休日| | |21/08/09| |19/08/12| |
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|敬老の日|23/09/18|22/09/19|21/09/20|20/09/21|19/09/16|18/09/17|
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|秋分の日|23/09/23|22/09/23|21/09/23|20/09/22|19/09/23|18/09/23|
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|休日| | | | | |18/09/24|
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|スポーツの日|23/10/09|22/10/10| | |19/10/14|18/10/08|
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|休日| | | | |19/10/22| |
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|文化の日|23/11/03|22/11/03|21/11/03|20/11/03|19/11/03|18/11/03|
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|休日| | | | |19/11/04| |
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|勤労感謝の日|23/11/23|22/11/23|21/11/23|20/11/23|19/11/23|18/11/23|
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36
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|天皇誕生日| | | | | |18/12/23|
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37
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|休日| | | | | |18/12/24|
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