data.js

/**
 * Part 1
 *
 * In this file, we're going to practice
 * creating and accessing data structues.
 *
 * See the README for detailed instructions,
 * and read every instruction carefully.
 */

//////////////////////////////////////////////////////////////////////
// Step 1 - Object Creation //////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
var animal = {};
animal.species = 'Penguin';
animal['name'] = 'Puffin';
animal.noises = [];
console.log(animal);

//////////////////////////////////////////////////////////////////////
// Step 2 - Array Creation ///////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
var noises = [];
noises[0] = 'braying';
noises.push('honk');
noises.unshift('chirp');
noises[noises.length] = 'trumpet';
console.log(noises.length);
console.log(noises.length - 1);
console.log(noises);



//////////////////////////////////////////////////////////////////////
// Step 3 - Combining Step 1 and 2 ///////////////////////////////////
//////////////////////////////////////////////////////////////////////
animal['noises'] = noises;
console.log(animal);
animal['noises'].push('bark');
console.log(animal);

/* *******************************************************************
 * Step 4 - Review
 *
 * 1. What are the different ways you can access properties on objects?
 *
 * 2. What are the different ways of accessing elements on arrays?
 *
 * *******************************************************************
 */

/* *******************************************************************
 * Step 5 - Take a Break!
 *
 * It's super important to give your brain and yourself
 * a rest when you can! Grab a drink and have a think!
 * For like 10 minutes, then, BACK TO WORK! :)
 * *******************************************************************
 */

//////////////////////////////////////////////////////////////////////
// Step 6 - A Collection of Animals //////////////////////////////////
//////////////////////////////////////////////////////////////////////
var animals = [];
animals.push(animal);
console.log(animals);
var duck = { 
species: 'duck', 
name: 'Jerome', 
noises: ['quack', 'honk', 'sneeze', 'woosh'] 
};
animals.push(duck);
console.log(animals);
var dog = {
  species: 'dog', 
  name: 'Butters',
  noises: ['bark', 'snuff']
};
var cat = {
  species: 'cat',
  name: 'Mr. Buggs',
  noises: ['purr', 'meow']
};
animals.push(dog);
animals.push(cat);
console.log(animals);
console.log(animals.length);


//////////////////////////////////////////////////////////////////////
// Step 7 - Making Friends ///////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
//the data structure I choose is array.
//I choose array because the date within can always be mutated if need be.
var friends = [];
function getRandom(array) {
  return Math.floor(Math.random() * array.length);
}
console.log(getRandom(animals));
var randomAnimal;
randomAnimal = animals[getRandom(animals)];
console.log(randomAnimal);
friends.push(randomAnimal.name);
console.log(friends);
animals[getRandom(animals)].friends = friends;
console.log(animals);


/**
 * Nice work! You're done Part 1. Pat yourself on the back and
 * move onto Part 2 in the file called "functions.js"
 */



//////////////////////////////////////////////////////////////////////
// DON'T REMOVE THIS CODE ////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
var animal, noises, animals, friends, getRandom;
if((typeof process !== 'undefined') &&
   (typeof process.versions.node !== 'undefined')) {
     module.exports.animal = animal || null;
     module.exports.noises = noises || null;
     module.exports.animals = animals || null;
     module.exports.friends = friends || null;
     module.exports.getRandom = getRandom || null;
}