My solution for FreeCodeCamp for Binary Agents challenge.

BinaryAgents.js

function binaryAgent(str) {
  return String.fromCharCode.apply(this, str.split(' ').map(binaryToString));
}

function binaryToString(binary) {
  return binary.split('').reverse().reduce(function(acc, item, index) {
   return acc + Math.pow(2, index) * item;
  }, 0);
}

binaryAgent("01000001 01110010 01100101 01101110 00100111 01110100 00100000 01100010 01101111 01101110 01100110 01101001 01110010 01100101 01110011 00100000 01100110 01110101 01101110 00100001 00111111");