使用 JavaScript 中的正則表達式過濾字符串中的逗號和空格

Question

我想使用正則表達式過濾字符串，以便：

• 多個空格替換為單個空格
• 逗號前后的所有空格都替換為單個逗號
• 用空格刪除多個逗號
• 刪除起始和結束逗號

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樣本輸入：

" , 這是 A ,,,, Test , , 在 js 123 中查找正則表達式, "

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預期輸出：

“這是一個測試，在 js 123 中找到正則表達式”

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到目前為止我嘗試過的：

我想出了一個到目前為止有效的解決方案。

 var str = " , This, is A ,,, Test , , to find regex,,in js 123 , "; str = str.replace(/ +/g, " "); //replace multiple space with single space str = str.replace(/\\s*,\\s*/g, ","); //replace space before and after comma with single comma str = str.replace(/,+/g, ","); //remove multiple comma with single comma str = str.replace(/^,|,$/g, ""); //remove starting and ending comma console.log(str);

Answer 1

首先，刪除逗號旁邊的所有空格：

replace(/ *, */g, ’,’)

其次，將所有連續逗號替換為單個逗號並將所有連續空格替換為單個空格：

replace(/,+/g, ‘,’)
replace(/ +/g, ‘ ‘)

最后，刪除開頭和結尾的逗號：

replace(/^,/, ‘’)
replace(/,$/, ‘’)

 var str = " , This, is A ,,, Test , , to find regex,,in js 123 , "; str = str.replace(/^[\\s,]+|[\\s,]+$|\\s*(\\s|,)[\\s,]*/g, "$1"); console.log(str); 

Answer 2

到目前為止，我已經提出了一個可行的解決方案。

var str =“，這是A ,,，Test，，以在js 123中找到正則表達式，”;

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str = str.replace(/ +/g, " "); //replace multiple space with single space
str = str.replace(/\s*,\s*/g, ","); //replace space before and after comma with single comma
str = str.replace(/,+/g, ","); //remove multiple comma with single comma
str = str.replace(/^,|,$/g, ""); //remove starting and ending comma