如何在正則表達式替換字符

Question

我有一個函數，接受一個字符串，並檢查它包含的郵政編碼的有效列表：

function ValidateZipCodeString(listOfZipCodes) { 
    // Only 5-digit zip codes are allowed 
    // Zip codes can be separated by a comma, a space, or both 
    // Any other characters will cause the error label to display 
    var regex = /^\d{5}(\s*,\s*\d{5})*$/; 
    return regex.test(listOfZipCodes); 
} 

一個「有效」的郵政編碼字符串可以是

12345,67854 
OR 
12345 35647, 09873 

BUT NOT 

1234565 
OR 
asd45, 12346 

這工作正常 - 就驗證字符串是好的。我現在需要做的就是在任何地方只有一個逗號或一個空格，同時有一個逗號和一個空格。所以使用上面的例子，我會得到

12345, 67854 
OR 
12345, 35647, 09873 

我該怎麼做？

[潔膚信息]

我要儘量澄清我的意圖是在更改現有功能。正如我所說的，它工作正常，我只需要函數返回一個布爾值來告訴調用函數是否顯示警告標籤。

我需要添加到ValidateZipCodeString功能使得當一個郵政編碼有效列表是字符串中，我想修改該字符串的功能（確保逗號和串是各5間數字郵政編碼），然後將該字符串寫入該郵政編碼字符串來自的文本框。

Answer 1

而不是\ S *您可以使用昏迷和空白的字符類

var regex = /^\d{5}([\s,]*\d{5})*$/; 

Answer 2

我想有兩個功能做到這一點：

s="12345,ad7854" 
t="12345 35647, 09873" 
function ReformatZipCodeArray(arrayOfZipCodes) { 
    // Only 5-digit zip codes are allowed 
    // Zip codes can be separated by a comma, a space, or both 
    // Any other characters will cause the error label to display 
    if (arrayOfZipCodes == null) { 
     return null; 
    } 
    var regex = /^\d{5}$/; 
    var areZipsInArrayValid = true; 
    var invalidZips = []; 
    arrayOfZipCodes.map(function(possibleZipCode) { 
     if (regex.test(possibleZipCode) == false) { 
      areZipsInArrayValid = false; 
      invalidZips.push(possibleZipCode); 
     } 
    }); 
    if (areZipsInArrayValid) { 
     return arrayOfZipCodes.join(", "); 
    } else { 
     console.log("ERROR: invalid zips are ", invalidZips); 
     return null; 
    } 
} 

function split(listOfZipCodes) { 
    // Split by either a space or a comma or any combination of those 
    if (listOfZipCodes.trim().length == 0) { 
     return null; 
    } 
    var regex = /[\s,]+/; 
    return listOfZipCodes.split(regex); 
} 

console.log(ReformatZipCodeArray(split(s))) 

上述代碼的輸出將是這樣的：

ERROR: invalid zips are ["ad7854"] 

拉鍊的有效字符串（ 「12345 35647，09873」）的輸出是這樣的：

12345, 35647, 09873 

Answer 3

我會怎麼做：

function ValidateZipCodeString(listOfZipCodes) { 
    // Only 5-digit zip codes are allowed 
    // Zip codes can be separated by a comma, a space, or both 
    // Any other characters will cause the error label to display 
    var regex = /^\d{5}(?:[\s,]+\d{5})*$/; 
    see the change here __^^^^^^ 
    return regex.test(listOfZipCodes); 
} 

正則表達式的解釋：

The regular expression: 

(?-imsx:^\d{5}(?:[\s,]+\d{5})*$) 

matches as follows: 

NODE      EXPLANATION 
---------------------------------------------------------------------- 
(?-imsx:     group, but do not capture (case-sensitive) 
         (with^and $ matching normally) (with . not 
         matching \n) (matching whitespace and # 
         normally): 
---------------------------------------------------------------------- 
^      the beginning of the string 
---------------------------------------------------------------------- 
    \d{5}     digits (0-9) (5 times) 
---------------------------------------------------------------------- 
    (?:      group, but do not capture (0 or more times 
          (matching the most amount possible)): 
---------------------------------------------------------------------- 
    [\s,]+     any character of: whitespace (\n, \r, 
          \t, \f, and " "), ',' (1 or more times 
          (matching the most amount possible)) 
---------------------------------------------------------------------- 
    \d{5}     digits (0-9) (5 times) 
---------------------------------------------------------------------- 
)*      end of grouping 
---------------------------------------------------------------------- 
    $      before an optional \n, and the end of the 
          string 
---------------------------------------------------------------------- 
)      end of grouping 
----------------------------------------------------------------------