const famousSayings = ['Fortune favors the brave.', 
											 'A joke is a very serious thing.', 
											 'Where there is love there is life.'];

const newYearsResolutions = ['Keep a journal', 'Take a falconry class'];
 
console.log(newYearsResolutions.length);

const itemTracker = ['item 0', 'item 1', 'item 2'];
 
itemTracker.push('item 3', 'item 4');
 
console.log(itemTracker); 
// Output: ['item 0', 'item 1', 'item 2', 'item 3', 'item 4'];

const newItemTracker = ['item 0', 'item 1', 'item 2'];
 
const removed = newItemTracker.pop(); // remove the last item
 
console.log(newItemTracker); 
// Output: [ 'item 0', 'item 1' ]
console.log(removed);
// Output: item 2

// shift remove the first item 
const groceryList = ['orange juice', 'bananas', 'coffee beans', 'brown rice', 'pasta', 'coconut oil', 'plantains'];

groceryList.shift(); // remove the first item

groceryList.unshift('popcorn'); // add item at the begining of the list
console.log(groceryList);

console.log(groceryList.slice(1,4)); // substract from list
console.log(groceryList);

const pastaIndex = groceryList.indexOf('pasta');
console.log(pastaIndex);

• Arrays are lists that store data in JavaScript.
• Arrays are created with brackets [].
• Each item inside of an array is at a numbered position, or index, starting at 0.
• We can access one item in an array using its index, with syntax like: myArray[0].
• We can also change an item in an array using its index, with syntax like myArray[0] = 'new string';
• Arrays have a length property, which allows you to see how many items are in an array.
• Arrays have their own methods, including .push() and .pop(), which add and remove items from an array, respectively.
• Arrays have many methods that perform different tasks, such as .slice() and .shift(), you can find documentation at the Mozilla Developer Network website.
• Some built-in methods are mutating, meaning the method will change the array, while others are not mutating. You can always check the documentation.
• Variables that contain arrays can be declared with let or const. Even when declared with const, arrays are still mutable. However, a variable declared with const cannot be reassigned.
• Arrays mutated inside of a function will keep that change even outside the function.
• Arrays can be nested inside other arrays.
• To access elements in nested arrays chain indices using bracket notation.