How to replace the number of characters in brackets with the same number of spaces?

Question

JavaScript

Hello!
It is necessary to replace the found number of characters in brackets with the same number of spaces.
For example, the word "world" is found and it must be replaced with three spaces "".
How to do it? Since I'm still green, only this construction comes to mind:
.replace(/ (\w+)\b/gi, ' ??? ');

.replace(/ (\w){1}\b/gi, ' ')
.replace(/ (\w){2}\b/gi, '  ')
.replace(/ (\w){3}\b/gi, '   ')
.replace(/ (\w){4}\b/gi, '    ')
.replace(/ (\w){5}\b/gi, '     ');
...

Answer 1

Could it be a little easier

mystring = "(тест)"
mystring.replace(/[^()]/g, " ")