正则表达式，匹配包括多行

Question

I my regex doesnt work if there is multiple lines.I'm trying to match that everything inside /#----- #/ symbols. In one single line it works fine. You can check it here: https://regex101.com/r/yZTXwh/3

code:

highlightMessage(message) {
    return message.replace(
      /\/#\s*(.*?)\s*#\//g,
      (_, g) => `<span class='highlited-message'>${g}</span>`,
    )
  }

text:

Hello
 /# my name
is
Mike
nice to meet you

 #/ 

Answer 1

You could use [^]* to match any thing include a newline

please try this:

function highlightMessage(message) {
    return message.replace(
      /\/#\s*([^]*)\s*#\//g,
      (_, g) => `<span class='highlited-message'>${g}</span>`,
    )
  }

Answer 2

It looks like you're trying to match the /#...#/ block's significant characters:

/\\/#\\s*((?:.|\\n)*?)\\s*#\\//gm

 let s = `Hello /# my name is Mike nice to meet you #/ bar /# single-line #/ foo /# multi-line #/ baz `; let r = /\\/#\\s*((?:.|\\n)*?)\\s*#\\//gm; let a; while ((a = r.exec(s)) !== null) console.log(a[1]); 

Here's a regex101