Reduce Exercise

reduce.js

/** 6) Given an array of potential voters, return an object representing the results of the vote
Include how many of the potential voters were in the ages 18-25, how many from 26-35, how many from 36-55, and how many of each of those age ranges actually voted. The resulting object containing this data should have 6 properties. See the example output at the bottom.
*/
var voters = [
    {name:'Bob' , age: 30, voted: true},
    {name:'Jake' , age: 32, voted: true},
    {name:'Kate' , age: 25, voted: false},
    {name:'Sam' , age: 20, voted: false},
    {name:'Phil' , age: 21, voted: true},
    {name:'Ed' , age:55, voted:true},
    {name:'Tami' , age: 54, voted:true},
    {name: 'Mary', age: 31, voted: false},
    {name: 'Becky', age: 43, voted: false},
    {name: 'Joey', age: 41, voted: true},
    {name: 'Jeff', age: 30, voted: true},
    {name: 'Zack', age: 19, voted: false}
];

function voterResultsFilters(arr) {
    var youngVotesTrue = arr.filter(function(item) {
        if (item.age >= 18 & item.age <= 25 && item.voted === true) {
            return item;
        }
    });

    var young = arr.filter(function(item) {
        if (item.age >= 18 & item.age <= 25) {
            return item;
        }
    });

    var midVotesTrue = arr.filter(function(item) {
        if (item.age >= 26 & item.age <= 35 && item.voted === true) {
            return item;
        }
    });

    var mid = arr.filter(function(item) {
        if (item.age >= 26 & item.age <= 35) {
            return item;
        }
    });

    var oldVotesTrue = arr.filter(function(item) {
        if (item.age >= 36 && item.voted === true) {
            return item;
        }
    });

    var old = arr.filter(function(item) {
        if (item.age >= 36) {
            return item;
        }
    });
    
    return {
        youngVotes: youngVotesTrue.length,
        young: young.length,
        midVotes: midVotesTrue.length,
        mid: mid.length,
        oldVotes: oldVotesTrue.length,
        old: old.length,
    };
}

// console.log(voterResultsFilters(voters)); // Returned value shown below:
/*
{ youngVotes: 1,
  youth: 4,
  midVotes: 3,
  mids: 4,
  oldVotes: 3,
  olds: 4 
}
*/