javascript replace() is not replacing all the characters match

Question

I want to turn /Admin/ListOfMovies into _Admin_ListOfMovies using replace().

var $id = id.replace('/', '_');

It looks like it only replacing the first /. How do I replace all of them?

Thanks for helping.

Answer 1

Use a regex with the g flag.

var $id = id.replace(/\//g, '_');

Answer 2

I hate javascript replace since it always wants a regex. Try this

var $id=id.split("/").join("_");

Answer 3

If you don't want to use the global flag which will do the replace function twice on your string, you can do this method which is a bit more specific and only replaces it once; it's also useful to know for other situations.

var $id = id.replace(/\/(\w+)\/(\w+)/, '_$1_$2');