JavaScript正则表达式模式

Question

[link](url) 

我想写一个正则表达式查找上面的图案，并返回下面的代码：

<a href="url">link</a> 

Answer 1

By reading a tutorial, I guess.

str = str.replace(/\[([^\]]*)\]\(([^)]*)\)/g, '<a href="$2">$1</a>'); 

这看起来有点吓人， 我承认。这里有一个解释：

/  # just the delimiter for the regex (like " for a string) 
\[  # match a literal [ 
(  # start capturing group $1 for later access 
    [^\]] # match any character except ] 
    *  # 0 or more of those (as many as possible) 
)  # end of capturing group $1 
\]  # match a literal ] 
\(  # match a literal (
(  # start capturing group $2 for later access 
    [^)] # match any character except) 
    *  # 0 or more of those (as many as possible) 
)  # end of capturing group $2 
\)  # match a literal) 
/  # end of regex 
g  # make regex global to replace ALL occurrences 

然后我们引用的两个摄像组，$1和$2替换字符串。 $1正在捕获[]中的字符和$2正在捕获()中的字符。