Encode string use core value word

core-value-encode.js

const chars = [
  "富强",
  "民主",
  "文明",
  "和谐",
  "爱国",
  "敬业",
  "诚信",
  "友善",
  "自由",
  "平等",
  "公正",
  "法制",
]

// point is a base-12 number string
const encodePoint = point => point
  .split("")
  .map(c => chars[parseInt(c, 12)])
  .join("")

const encode = str => str
    .split("")
    .map(s => s.charCodeAt(0).toString(12))
    .map(n => n.length + n)
    .map(encodePoint)
    .join("")

const decodePoint = codes => {
  const s = codes.map(c => "0123456789ab"[c])
  return String.fromCharCode(parseInt(s.join(""), 12))
}

const decode = str => {
  const chunks = []

  for(let i = 0; i < str.length; i += 2) {
    chunks.push(str.slice(i, i + 2))
  }

  const codes = chunks.map(c => chars.indexOf(c))

  let r = ""

  for(let i = 0; i < codes.length;) {
    const n = codes[i]
    r += decodePoint(codes.slice(i + 1, i + n + 1))
    i += n + 1
  }

  return r
}

console.log(encode("hello world"))
console.log(decode("文明自由自由文明自由敬业文明平等富强文明平等富强文明平等和谐文明文明自由文明平等法制文明平等和谐文明平等诚信文明平等富强文明自由爱国"))