How to replace all periods in a string in JavaScript without /g?

Question

I want to replace periods in a string with %20 for Firebase key purposes. I can do 1 period at a time with:

string.replace('.', '%20')

I can even do all of them with a /g regex flag:

string.replace(/\./g, '%20')

But Firebase rules gives me an error:

Error saving rules - Line 5: regular expressions do not support flags other than i

So I need an expression that replaces all periods without using /g. I could just chain .replace('.', '%20') a bunch of times:

string.replace('.', '%20').replace('.', '%20').replace('.', '%20').replace('.', '%20')

But I'm hoping there's a better way.

UPDATE: I had tried string.split('.').join('%20'), but Firebase throws the error:

Type error: Function call on target that is not a function.

I guess they took out the split function in their JSON rules parser.

UPDATE 2: I also tried (function() {var s = auth.token.email; while (s.indexOf('.') != -1) { s = s.replace('.', '%20') } return s})(). Firebase complained that function definitions are not allowed in their database rules.

UPDATE 3: Thanks to Firebase's wonderful support, I found out that the string.replace function in their database rules has been replaced with a version that replaces all occurrences of the substring, not just a single occurrence. So actually string.replace('.', %2E') works perfectly!

Answer 1

You can just split and join it again string.split('.').join('%20')