Nested Data Exercises

💪 10+ Practice Challenges: Nested `Objects` & `Arrays`

This challenge will test your ability to work with nested Objects and Arrays.

Uses real-world 'inspired' data.

If you are experienced on this topic, expand the "💡 Challenge Yourself!" section (following the instructions.)

Index

Instructions
Get Started
Preview Test Data
Stuck? Check Hints

Instructions

Task: Complete the 10+ functions in index.js and pass all tests specified in test/index.test.js ✅

The difficulty increases as you progress.

Before you begin coding, review test data below

getName(character) -> Luke Skywalker
getFilmCount(character) -> 5
getFirstStarshipName(character) -> X-wing
getSummary(character) -> Luke Skywalker, 172cm, 77kg. Featured in 5 films.
getVehiclesCostInCreditsSumTotal(character) -> 8000
getStarshipPassengerAndCrewSumTotal(character) -> 27
getNthFilm(character, filmNumber) filmNumber=1 -> A New Hope
getCargoCapacityTotal(character) -> 80124
getFastestStarshipName(character) -> X-wing
getLargestCargoStarshipModelName(character) -> Lambda-class T-4a shuttle
getSlowestVehicleOrStarshipName(character) -> Imperial Speeder Bike

Stretch

💡 Challenge Yourself! (expand for stretch tips)

Research & use different patterns. (Destructuring, move common code into reusable helper methods, functional programming techniques)
Trade completed code with a peer:
- Pair program: Take turns (30-60 min.) working through a refactor. Talk through & optimize as needed.
- Trade code for feedback! (Example format: 3&1, 3 things that you liked and 1 to improve.)
Time yourself. See if you can beat your own time starting over. Speed run!
See how many tests you can pass/complete before Googling or asking for help.
When you're finished, refactor & improve readability. Write up why it is improved.

Get Started

3 options are included below.

The CodeSandbox option is fast & highly recommended.

1. Fastest Option

LAUNCH ON CODESANDBOX 🚀

2. Local Setup Instructions: From Command Line

Fork & clone to your local computer
cd into your newly cloned repository
Install using npm
Run test command

git clone <insert your git clone url here>
cd <repo folder name>
npm install
npm run test:watch
#####
### Or without fs watching:
# npm test

NOTE: In local development, use the file watcher command: npm run test:watch.

3. Local Setup Instructions: Run Tests in Browser

Fork & clone to your local computer
cd into your newly cloned repository
Install and Start using npm

git clone <insert your git clone url here>
cd <repo folder name>
npm install
npm start

Data

Example data your code will be tested against.

// Complete Test Data Object (credit: https://SWAPI.co)
// Side note: Yes Star Wars 🤓 purists. It's a bit out of date. Talk to SWAPI about it.
// Focus & follow instructions above. 🤖
{
  "name": "Luke Skywalker",
  "height": "172",
  "mass": "77",
  "hair_color": "blond",
  "skin_color": "fair",
  "eye_color": "blue",
  "birth_year": "19BBY",
  "homeworld": "Tatooine",
  "films": [
    "A New Hope",
    "The Empire Strikes Back",
    "Return of the Jedi",
    "Revenge of the Sith",
    "The Force Awakens"
  ],
  "species": [
    "Human"
  ],
  "vehicles": [
    {
      "name": "Snowspeeder",
      "model": "t-47 airspeeder",
      "manufacturer": "Incom corporation",
      "cost_in_credits": null,
      "length": "4.5",
      "max_atmosphering_speed": "650",
      "crew": 2,
      "passengers": 0,
      "cargo_capacity": "10"
    },
    {
      "name": "Imperial Speeder Bike",
      "model": "74-Z speeder bike",
      "manufacturer": "Aratech Repulsor Company",
      "cost_in_credits": "8000",
      "length": "3",
      "max_atmosphering_speed": "360",
      "crew": 1,
      "passengers": 1,
      "cargo_capacity": "4"
    }
  ],
  "starships": [
    {
      "name": "X-wing",
      "model": "T-65 X-wing",
      "manufacturer": "Incom Corporation",
      "cost_in_credits": 149999,
      "length": "12.5",
      "max_atmosphering_speed": "1050",
      "crew": 1,
      "passengers": 0,
      "cargo_capacity": "110",
      "consumables": "1 week",
      "hyperdrive_rating": "1.0",
      "MGLT": "100",
      "starship_class": "Starfighter"
    },
    {
      "name": "Imperial shuttle",
      "model": "Lambda-class T-4a shuttle",
      "manufacturer": "Sienar Fleet Systems",
      "cost_in_credits": 240000,
      "length": "20",
      "max_atmosphering_speed": "850",
      "crew": 6,
      "passengers": 20,
      "cargo_capacity": "80000",
      "consumables": "2 months",
      "hyperdrive_rating": "1.0",
      "MGLT": "50",
      "starship_class": "Armed government transport"
    }
  ],
  "created": "2014-12-09T13:50:51.644000Z",
  "edited": "2014-12-20T21:17:56.891000Z",
  "url": "https://swapi.co/api/people/1/"
}

Hints

Helpful tips & reminders 🔎

Critical: Don't make assumptions about input data types. (Convert/handle Numbers & null)
- Convert number strings into actual numbers with built-in functions parseInt, parseFloat, Number, etc.
Ensure your functions return somethingUseful.
Make sure you understand the requirements. All the words used? Try list the steps in comments first.
Don't forget the source data uses snake_case naming.
Pay close attention to array vs. object syntax (vehicles[0].name vs. character.vehicles.)
Some of the functions include detailed instructions.
You might have to infer the desired fields. Carefully read the description and function name (description included above the function.)

eg180/nested-data-exercises