#!/usr/bin/env node

function encode1(s) {
  return encodeURI(s).replace(
      /%(u[0-9A-F]{4})|(%[0-9A-F]{2})/gm,
      function ($0, $1, $2) {
          return ($1 && "\\" + $1.toLowerCase()) || decodeURI($2);
      }
  );
}

console.log(encode1('content:\\\\x22\\\\x22'))
console.log(encodeURI('\\\\x22\\\\x22'))
// console.log(JSON.parse())