data-types.js

/**
 * Booleans
 *
 * Can eather be true or false
 */
var myBoolean = true;

/**
 * Numbers
 *
 * Positive and negative numbers.
 * Decimal numbers are called floats.
 */
var myNumber = 5;

/**
 * Strings
 *
 * Any characters surounded by double quotes " " or or single quotes ' '.
 * Remember escaping with a backslash
 */
var myString = 'Hello World!';

/**
 * Arrays
 *
 * Can hold multiple values of any kind.
 * Square brakets [] indicate an array.
 */
var myArray = [1, 2, 4, 6, 'and', 'strings'];

// Can be multidimensional
// var myArray = [['some', 'strings'] [7, 8, 9]];
// var myArray = [1, 2, true, 'some string', [7, 8, 'string']];

// The key always starts with 0
// console.log(myArray[0]);
// console.log(myArray[3][2]);

/**
 * Objects
 *
 * Like an array but the keys are strings and their values are called propperties.
 *
 * Curly braces {} indicate an object.
 *
 * They can also have methods. See objects.js for that.
 */
var myObject = {
  someKey: 'some string',
  anotherKey: ['i', 'am', 'an', 'array'],
}

// adressing a propperty
// console.log(myObject.someKey);
// console.log(myObject.anotherKey[3]);

var product1 = {
  id: 234,
  title: 'Tasty Cookies',
  price: 1.99
}

var product2 = {
  id: 456,
  title: 'Apples',
  price: 2.99
}

var shoppingCart = [product1, product2];

console.log(shoppingCart);

/**
 * Keep in mind, Objects can contain arrays of objects (...of arrays of objects...)
 *
 * Syntax would look like { [{}, {}], [{}, {}] }
 */

var blogEntry = {
  id: 654321,
  date: '04.09.2017',
  author: {
    id: 12,
    name: 'John',
    lastname: 'Doe'
  },
  title: 'Hey, some great News!',
  body: 'Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assum.',
  comments: [{
    id: 55675,
    title: 'hey there',
    body: 'that where really great news!'
  }, {
    id: 55676,
    title: 'oh really?!',
    body: 'thats nice to hear!!!'
  }]
}

//console.log(blogEntry);

/*
console.log(myBoolean);
console.log(typeof myBoolean);

console.log(myNumber);
console.log(typeof myNumber);

console.log(myString);
console.log(typeof myString);

console.log(myArray);
console.log(typeof myArray);

console.log(myObject);
console.log(typeof myObject);
*/