encodeURIComponentJava.js

/*
MDC on encodeURIComponent():

literal characters (regex representation): [-a-zA-Z0-9._*~'()!]

Java 1.5.0 documentation on URLEncoder:

literal characters (regex representation): [-a-zA-Z0-9._*]
the space character " " is converted into a plus sign "+".
*/

const rnoEncodeChar = /%20|~|'|\(|\)|!/g;
const NoEncodeCharMap = {
  '%20': '+',
  '~': '%7E',
  '\'': '%27',
  '(': '%28',
  ')': '%29',
  '!': '%21',
};

function encodeURIComponentJava(str) {
  return encodeURIComponent(str).replace(rnoEncodeChar, function (s) {
    return NoEncodeCharMap[s];
  });
}