Question

好吧，我有一些类似下面的文字：

＆leftsidetext sometext rightsidetext＆％leftsidetext sometext rightsidetext％

现在我想在sometext内替换replacetext：＆leftsidetext sometext rightsidetext＆

Answer 1

let arr = [
  "& leftsidetext sometext rightsidetext &", 
  "%leftsidetext sometext rightsidetext%"
]

let res = arr.map(str => str.indexOf("&") === 0 ? str.replace("sometext", "replText") : str)

console.log(res)

Answer 2

我真的很难理解您的“问题”，但是我将从一个假设开始，即'leftsidetext'和'rightsidetext'是不除'a'到'z'大写或小写字母以外的其他空格或字符。

从那里可以找到一个解决方案：

let theString='& leftsidetext sometext rightsidetext & %leftsidetext sometext rightsidetext%',
  theRegex=/& ([a-zA-Z]+) (.+) ([a-zA-Z]+) & %/,
  newvalue='Your new text'
  
console.log(theString.replace(theRegex,'& $1 '+newvalue+' $3 & %'))

如何在某些文字之间替换

2 个答案: