fun-fun-function-filter-1

filter1.js

// we want to filter out all dogs

var animals = [
  { name: 'fluffykins', species: 'rabbit' },
  { name: 'caro', species: 'dog' },
  { name: 'jimmy', species: 'fish' },
  { name: 'ursula', species: 'cat' },
  { name: 'hamilton', species: 'dog' }
]

// functional way - compare with example below
var dogs = animals.filter(function(animal) {
  return animal.species === 'dog'
})


// another way
var isDog = function(animal) {
  return animal.species === 'dog'
}

var dogs = animals.filter(isDog)
var otherAnimals = animals._.reject(isDog)


console.log(dogs)


/* 

var dogs = []
for (var i = 0; i < animals.length; i++) {
  if (animals.species === 'dog') {
     dogs.push(animals[i])
  }
}

*/