正则表达式换行符仅替换为字符 n

Question

我有这个javascript正则表达式：

let output = 'This role involves:\n   - Steering the direction of universal expansion and resource allocation.';
console.log('before:', JSON.stringify(output));

output = output.replace(/[^a-zA-Z0-9 _-\s\r\n\t]/gi, '');
console.log('after:', JSON.stringify(output));
// This role involvesn   - Steering the direction of universal expansion and resource allocation

它不会留在那里

\n

，而是用

n

代替它

其次，我想将

   - Steering

替换为一个空格，然后是减号，然后是另一个空格，然后是单词

 - Steering

。但似乎这不仅仅是一个普通的空间。或者我如何调试最好？

Answer 1

let input = `This role involves:
  - Steering the direction of universal expansion and resource allocation.`;
  

let output = input.replace(/\n/g, 'n').replace(/\\s+/g, '');
console.log(output);