在所有出現的字符串字符 javascript 中替換字符串

Question

我想找到所有\n和:的確切出現，並將其間的字符串替換為特定字符串。

例如，給定這個輸入：

 Testing \n string of character \n June,23 2020: the task was completed. \n April,4 2020: All looks \n good

預期的結果是這樣的：

 Testing \n string of character <br><b> June,23 2020</b><br> the task was completed. <br><b> April,4 2020</b></br> All looks \n good

 const text=`Testing \n string of character \n June,23 2020: the task was completed. \n April,4 2020: All looks \n good`; const newlineColonRegex = /(\n|:)/g const replaceWith = '<br><b>' const newString = text.replace(newlineColonRegex, replaceWith) console.log(newString)

Answer 1

您可以使用否定字符 class 排除兩者的匹配。

\n([^\n:]+):

用。。。來代替

<br><br>$1<br><br>

正則表達式演示

 const regex = /\n([^\n:]+:)/g; const text = `Testing \n string of character \n June,23 2020: the task was completed. \n April,4 2020: All looks \n good`; const newlineColonRegex = /\n([^\n:]+):/g; const replaceWith = '<br><br>$1<br><br>' const newString = text.replace(newlineColonRegex, replaceWith) console.log(newString)

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如果您還想從字符串的開頭匹配它，您可以使用錨點而不是換行符^([^\n:]+:)並使用/gm標志