Resolução: Praticando Arrays

Código da Resolução do Exercício

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Exercício 12</title>

</head>
<body>
    Praticando Arrays
</body>
</html>

index.js

const hitchedSpaceships = [
    ["Fenix", 8, true],
    ["Golias", 10, true],
    ["Helmet", 5, false],
    ["Elemental", 3, true],
    ["Darwin", 15, false]
]

let crewGreaterThan9 = hitchedSpaceships.filter(spaceship => {
    return spaceship[1] > 9
}).map(spaceship => {
    return spaceship[0]
})

let ongoingHitchPlatform = hitchedSpaceships.findIndex(spaceship => {
    return spaceship[2] == false
})

let highlightedSpaceships = hitchedSpaceships.map(spaceship => {
    return spaceship[0].toUpperCase()
})

let message = "Espaçonaves com mais de 9 tripulantes: " + crewGreaterThan9.join(", ")
message += "\\nPlataform com processo de engate: " + (ongoingHitchPlatform + 1)
message += "\\nEspaçonaves destacadas: " + highlightedSpaceships.join(", ")

alert(message)