Advent of Code - 5a

AOC5a.js

var names = document.querySelector("pre").innerHTML.trim(),
    niceCount = 0;

function vowelCheck(name) {
  var count = name.match(/[aeiou]/gi);
  return count && count.length >= 3;
}

function doubleCheck(name) {
  return /(.)\1/.test(name);
}

function excludeCheck(name) {
  return !/ab|cd|pq|xy/.test(name);
}

console.log(names.split("\n").filter(function(name, idx) {
  var result = vowelCheck(name) && doubleCheck(name) && excludeCheck(name);
//   console.log(name + ":" + result);
  return result;
}).length);