Answers for ".reduce examples"

.reduce examples

const pets = ['dog', 'chicken', 'cat', 'dog', 'chicken', 'chicken', 'rabbit'];

const countPets = pets.reduce((obj, pet) => {
( !obj[pet] ? obj[pet] = 1 : obj[pet]++ )
return obj;
}, {}) 

console.log(countPets)

/*
Output:
 { 
    dog: 2, 
    chicken: 3, 
    cat: 1, 
    rabbit: 1 
 }
 */