JS正则表达式可在regular-expressions.info上使用，但不适用于我的代码

Question

I have this string in JavaScript:

s = "</p><ol><li>First\n</li><li>Second\n</li></ol><p>"

Then I do this (to remove the outer "</p>...<p>"):

s = s.replace(/^<\/([^> ]+)[^>]*>(.*)<\1>$/,"$2");

Nothing happens (s is unchanged, and using match() returns false), but if I go try it at http://www.regular-expressions.info/javascriptexample.html , it works!

I've tried all sorts of things (creating a separate regExp object, using //g, taking out the ^$, replacing [^> ]+ with [a-z0-9]*...) but nothing makes any difference.

It's driving me nuts. can anyone tell me what I'm doing wrong?

Answer 1

The problem is simply that . does not match newlines \\n .

If you replace the .* with [\\s\\S]* , your regex should work.

[\\s\\S] means match any space or non-space character, which equates to match any character.