How do I raw URL encode/decode in JavaScript and Ruby to get the same values in both?

Question

I am working on a web application where I have to encode and decode a string at the JavaScript side and Ruby backend of the code. the only problem is that the escape methods

Answer 1

require "uri";
puts URI.escape "1 2;", Regexp.new("[^0-9a-z\\-_.!~*'()]", "i");

Answer 2

URI.escape was deprecated, an alternative is ERB::Util.url_encode.

ERB::Util.url_encode(foo)

If you are using it inside an .erb file you can do:

u(foo)

Answer 3

Use

URI.escape(foo, Regexp.new("[^#{URI::PATTERN::UNRESERVED}]"))

in ruby, and

encodeURIComponent(foo); 

in javascript

Both these will behave equally and encode space as %20.