我想知道是否有愛爾蘭Eircode格式驗證的最佳做法。迄今爲止，在JavaScript中使用REGEX的最佳嘗試如下：基於第11頁上的官方規範here。愛爾蘭Eircode驗證
（第11頁基於文檔的頁碼，或12頁，如果你在封面）
/^[A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y]{1}[0-9]{1}[0-9,W]{1}[\ \-]?[0-9,A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y]{4}$/
我沒有找到這裏的任何Eircode相關的問題，所以我想」打開這一個，看看其他人的想法，看看有什麼更好/更短/更有效的模式，任何人都可以想出來。
編輯：根據@Asunez答案刪除逗號。
/^[ACDEFHKNPRTVWXY]{1}[0-9]{1}[0-9W]{1}[\ \-]?[0-9ACDEFHKNPRTVWXY]{4}$/
自@ Manwal的答案並不完全做自己應該，這是我在縮短的正則表達式OP嘗試：
^[AC-FHKNPRTV-Y]{1}[0-9]{1}[0-9W]{1}[ \-]?[0-9AC-FHKNPRTV-Y]{4}$
這基本上就是你的正則表達式，有一些變化：
[]括號內的項目。C-F,V-Y）。在其他地方，添加範圍並不會有好處，因爲它不會縮短正則表達式的範圍。它也可能與D6W專門處理向後看，但這是一種藝術，而不是正則表達式。
見正則表達式演示：here
您也可以反轉字符類不包括給予人物，雖然它不會使正則表達式更短，這也是值得注意的。但是，您需要確保不包括其他字符（如點，逗號）。我通過添加\W令牌來實現。
，您可以嘗試here
您可以通過'^ [AC -FHKNPRTV-Y] \ d [0-9W] [ - ]？[0-9AC-FHKNPRTV-Y] {4} $' –
@AlexeyShein不一定 - '\ d'和'[0- 9]'，第一個也接受希伯來文或其他語言的數字，而第二個只接受0-9。 – Asunez
謝謝@Asunez，關於逗號的好處。 – ConorLuddy
更新時間此回答迴避字符B。你可以試試這個：
/^[AC-Y]{1}[0-9]{1}[0-9W]{1}[ \-]?[0-9AC-Y]{4}$/
說明：
^ assert position at start of the string
[AC-Y]{1} match a single character present in the list below
Quantifier: {1} Exactly 1 time (meaningless quantifier)
A the literal character A (case sensitive)
C-Y a single character in the range between C and Y (case sensitive)
[0-9]{1} match a single character present in the list below
Quantifier: {1} Exactly 1 time (meaningless quantifier)
0-9 a single character in the range between 0 and 9
[0-9W]{1} match a single character present in the list below
Quantifier: {1} Exactly 1 time (meaningless quantifier)
0-9 a single character in the range between 0 and 9
W the literal character W (case sensitive)
[ \-]? match a single character present in the list below
Quantifier: ? Between zero and one time, as many times as possible, giving back as needed [greedy]
the literal character
\- matches the character - literally
[0-9AC-Y]{4} match a single character present in the list below
Quantifier: {4} Exactly 4 times
0-9 a single character in the range between 0 and 9
A the literal character A (case sensitive)
C-Y a single character in the range between C and Y (case sensitive)
$ assert position at end of the string
根據產品指南章1.5.4允許的標誌是：
-----------------------------------------------------------------------
| Component | Position | Allowed characters |
-----------------------------------------------------------------------
| Routing Keys | 1 | A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y |
-----------------------------------------------------------------------
| Routing Keys | 2 | 0-9 |
-----------------------------------------------------------------------
| Routing Keys | 3 | 0-9 with the exception of W for D6W |
-----------------------------------------------------------------------
| Unique Identifier | 4 | 0-9, A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y |
-----------------------------------------------------------------------
| Unique Identifier | 5 | 0-9, A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y |
-----------------------------------------------------------------------
| Unique Identifier | 6 | 0-9, A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y |
-----------------------------------------------------------------------
| Unique Identifier | 7 | 0-9, A,C,D,E,F,H,K,N,P,R,T,V,W,X,Y |
-----------------------------------------------------------------------
每一種路由項必須包含字母和除了一個具體情況是D6W代碼兩位數。
所以代碼與A5W,C6W,V0W無效。
根據章節1.5.1 Recommendations for Storage and Presentation
代碼不應與space或dash分離，應該分開，而是僅由space且僅用於顯示。
假設，正確的正則表達式應該是這樣的：
/([AC-FHKNPRTV-Y]\d{2}|D6W)[0-9AC-FHKNPRTV-Y]{4}/
你能提供例如'愛爾蘭Eircode'的？ – Manwal
https://www.eircode.ie/docs/default-source/Common/prepareyourbusinessforeircode-edition3published.pdf?sfvrsn=2 – ConorLuddy