javascript - What does the regular expression /_/g mean?

Question

JavaScript:

.replace(/_/g," ");

I have it in my code but can't remember why or what it does! Can one of you regular expression gurus help?

I know this may seem basic, but regular expressions are not my cup of tea and googling for /g didn't help much.

Answer 1

The regex matches the _ character.

The g means Global, and causes the replace call to replace all matches, not just the first one.