Node functions to decode and encode strings into literal binary format

binary_decode_encode.js

// Decode binary

function decodeBinary(arr) {
  let out = ''
  for (let i = 0; i < arr.length; i += 8) {
    out += String(Buffer.from(parseInt(arr.slice(i, i + 8), 2).toString(16), 'hex'))
  }
  return out
}

function encodeBinary(str) {
  let out = ''
  for (let i = 0; i < str.length; i++) {
    let bin = str.charCodeAt(i).toString(2)
    out += '0'.repeat(8 - bin.length) + bin
  }
  return out
}

console.log(decodeBinary(encodeBinary(
  'You can use this decodeBinary function to get the *secret* messages from r/ProgrammerHumor memes or whatever'
)))