因为。查找单个字符，换行符或行结束符除外。

所以，要匹配任何东西，你可以这样使用:(.|\n)*?

希望能有所帮助!

试试这个:

I bought (.* )?sheep

甚至

I bought .*sheep

(.*?)匹配任何东西-我已经使用它很多年了。

Regex: /I bought.*sheep./ Matches - the whole string till the end of line I bought sheep. I bought a sheep. I bought five sheep. Regex: /I bought(.*)sheep./ Matches - the whole string and also capture the sub string within () for further use I bought sheep. I bought a sheep. I bought five sheep. I boughtsheep. I bought a sheep. I bought fivesheep. Example using Javascript/Regex 'I bought sheep. I bought a sheep. I bought five sheep.'.match(/I bought(.*)sheep./)[0]; Output: "I bought sheep. I bought a sheep. I bought five sheep." 'I bought sheep. I bought a sheep. I bought five sheep.'.match(/I bought(.*)sheep./)[1]; Output: " sheep. I bought a sheep. I bought five "

如果你使用JavaScript, ES2018添加了/s (dotAll)标志。带有/s标志的点。将匹配任何字符，包括换行符。

游戏机log(“line_1 \ nline_2”。match (/ + / s))

注意:目前还不是所有浏览器都支持它。

/。如果没有换行符，*/效果很好。如果它必须匹配换行符，这里有一些解决方案: