javascript - Replace text inside of square brackets

Question

var a = "[i] earned [c] coin for [b] bonus";

How to get string "__ earned __ coin for __ bonus" from the variable above in JavaScript?

All I want to do is to replace all the bracket [] and its content to __.

Answer 1

a = a.replace(/[.*?]/g, '__');

if you expect newlines to be possible, you can use:

a = a.replace(/[[^]]*?]/g, '__');