Match elements from two arrays according to a specific criteria and obtain missing and extraneous elements.

check.js

var known = [ 1, 6, 3, 9, 4 ];
var presented = [ 2, 5, 7, 4, 9, 4 ];

check(known, presented, match, done);

function match(k, p) {
  if( k !== p) return false;
  console.log(k, 'matched with', p);
  return true;
}

function done(missing, extraneous) {
  console.log('Missing:', missing);
  console.log('Extraneous:', extraneous);
}

function check(known, presented, match, done) {
  var extraneous = presented.slice();
  var missing = known.filter(unmatched);

  return done(missing, extraneous);

  function unmatched(k) {
    return ! extraneous.some(matches);

    function matches(p) {
      if (! match(k, p)) return false;
      extraneous.splice(extraneous.indexOf(p), 1);
      return true;
    }
  }
}