http://www.freecodecamp.com/minsooshin 's solution for Bonfire: Finders Keepers

bonfire-finders-keepers.js

// Bonfire: Finders Keepers
// Author: @minsooshin
// Challenge: http://www.freecodecamp.com/challenges/bonfire-finders-keepers
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function find(arr, func) {
  var num = 0;
  
  num = arr.filter(function(val) {
    return func(val);
  });
  return num[0];
}

find([1, 2, 3, 4], function(num){ return num % 2 === 0; });