functional filtering > imperative iteration

filterVSfor.js

//stop imperatively iterating!

var fictionalCharacters = [
  { name: 'Beavis', universe: 'Beavis and Butthead'},
  { name: 'Cartman', universe: 'Southpark'},
  { name: 'Stimpy', universe: 'Ren and Stimpy'},
  { name: 'Butthead', universe: 'Beavis and Butthead'},
  { name: 'Stan', universe: 'Southpark'},
  { name: 'Ren', universe: 'Ren and Stimpy'},
  { name: 'Ironman', universe: 'Marvel'}
] 

//the imperative iteration
var southpark = []
for (var i = 0; i < fictionalCharacters.length; i++) {
  if (fictionalCharacters[i].universe === 'southpark') {
    southpark.push(fictionalCharacters[i])
  }
}

//the functional filter
var beavisAndButthead = fictionalCharacters.filter(function(fictionalCharacters)) {
  return fictionalCharacters.universe === 'Beavis and Butthead'
})