Remove all falsy values from an array. Falsy values in javascript are false, null, 0, "", undefined, and NaN.

bonfire-falsy-bouncer.js

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

function bouncer(arr) {
  // Don't show a false ID to this bouncer.
  function noFalsyVals(value){
    //function used in conjunction with filter() function
    //compares falsy values and returns value if none are found
    //else it returns nothing
      if (value !== false || value !== null || value !== undefined || value.isNaN() === false){
        return value;
      }else{
        return;
      }
      
  }
  
  arr = arr.filter(noFalsyVals);
  return arr;
}

bouncer([7, "ate", "", false, 9]);