http://www.freecodecamp.com/bskydive 's solution for Bonfire: Falsy Bouncer

bonfire-falsy-bouncer#.js

// Bonfire: Falsy Bouncer
// Author: @bskydive
// Challenge: http://www.freecodecamp.com/challenges/bonfire-falsy-bouncer#
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function bouncer(arr) {
  
  function filtMe(value){
    var result=false;
    //NaN,undefined,null check only this way
    if (value) {result=(!value.toString().toLowerCase().includes('false') & value.toString().length>0);}
    
    return result;
  }                                                                                                                                            
  return arr.filter(filtMe);
}

bouncer([false, null, 0, NaN, undefined, ""]);