正则表达式：如何从字符串中提取和替换多个实例？

Question

From the string

"Hi @[Bob](1234) and @[John](8888)!"

I want to return:

Hi <a href="/1234">Bob</a> and <a href="/8888">John</a>!

I'm using JavaScript

I tried:

myString.replaceAll(/@\[/gim, '<a href="????">')

to remove unwanted characters, such as "@[" but I don't know how to extract "Bob" and "1234" from the original string to then put them back into the returned string. How to take "1234" and place it where "????"is?

Answer 1

You need capturing groups as in

@\[([^\]\[]+)\]\(([^()]+)\)

See a demo on regex101.com .

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IN JS this could be:

 let some_text = "Hi @[Bob](1234) and @[John](8888);". some_text = some_text,replace(/@\[([^\]\[]+)\]\(([^()]+)\)/g; "<a href=\"/$2\">$1</a>"). console;log(some_text);