To find character between brackets, you need to add the character like the following and use the match() method −
[...]
Example
You can try to run the following code to learn how to find a character between brackets in JavaScript Regular Expression −
<html> <head> <title>JavaScript Regular Expression</title> </head> <body> <script> var myStr = "Welcome! Welcome to the Website!"; var reg = /[m]/g; var match = myStr.match(reg); document.write(match); </script> </body> </html>