exercise-2.js

/* 
An array of travel destinations is defined below.
Each destination has a name, a distance from Glasgow, and a list of transportations available to go there.

1) Filter the travelDestinations array to return all destination names reachable within 500 kms.
2) Find a destination name reachable by ferry.
3) Find all the destination names that are both more than 300 kms far away and reachable by train.
*/


let destination1 = {
    destinationName: "Edinburgh",
    distanceKms: 80,
    transportations: ["car", "bus", "train"]
};

let destination2 = {
    destinationName: "London",
    distanceKms: 650,
    transportations: ["car", "bus", "train"]
};

let destination3 = {
    destinationName: "Paris",
    distanceKms: 900,
    transportations: ["train", "plane"]
};

let destination4 = {
    destinationName: "Dublin",
    distanceKms: 350,
    transportations: ["plane", "ferry"]
};

let travelDestinations = [destination1, destination2, destination3, destination4];

/* 
DO NOT EDIT ANYTHING ABOVE THIS LINE
WRITE YOUR CODE BELOW
*/


let destinationNamesWithin500Kms = travelDestinations.filter(a => a.distanceKms < 500).map(b => b.destinationName);// Complete here

let destinationNameReachableByFerry = travelDestinations.find(c => c.transportations.includes(`ferry`)).destinationName;// Complete here

let destinationNamesMoreThan300KmsAwayByTrain = travelDestinations.filter(a => a.distanceKms > 300).filter(c => c.transportations.includes(`train`)).map(a => a.destinationName);// Complete here (PRINT THE RESULT IN THE CONSOLE USING FOREACH)


/*
DO NOT EDIT ANYTHING BELOW THIS LINE
*/

console.log(`Question 1) Expected result: Edinburgh,Dublin, actual result: ${destinationNamesWithin500Kms}`);
console.log(`Question 2) Expected result: Dublin, actual result: ${destinationNameReachableByFerry}`);
console.log(`Question 3) Expected result: London,Paris, actual result: ${destinationNamesMoreThan300KmsAwayByTrain}`);