How to escape html and urls in Google Apps Script?

Question

Say I have the following Javascript:

var userString = "..."; // e.g. "cats < dogs"

How do I get userString with all html characters escaped?

E.g. I want cats < dogs.

Also, how do I do the same thing with escaping all URL characters?

E.g. I want cats%20%3C%20dogs

I realize I could use a function such as this, but it seems to be non-exhaustive. E.g. it's missing ".

Since Javascript does not seem to have a built-in method, I'm hoping that Google Apps Script has a built-in solution.

Answer 1

From what I can tell, you need to use a function such as this for HTML encoding, and encodeURI() for URLs.