ObjectsObjects studies// source https://jsbin.com/niyoqew

jsbin.niyoqew.js

// -----Objects----- //

/* An object, like an array, is a container for data, but an object stores key/value pairs
with curly braces. Almost every is considered an object except primitive values, including 
strings, numbers, booleans, null, and undefined. Objects can be created in three ways: */

"use strict";

var obj1 = {}; // the literal method, creating an empty object assigned to the variable
console.log(obj1);
var obj2 = Object.create({ another: "object" }); // requires an argument to be passed into the
//parentheses for having obj2 inherit its methods and/or properties

/* To demonstrate inherittance of properties between objects, obj1 will has some key/values
assigned, and then obj3 will inherit them. */

obj1.first = "sup";
obj1.second = "yo";
console.log(obj1); // no longer empty;

var obj3 = new Object(obj1); // a new object "obj3," with the same values as obj1!
console.log(obj3);

/* object keys and key/values can be accessed using either dot or bracket notation, though
care must be taken: dot notation does not require the quotation marks around a string while
bracket notation does. A string with a space in it will require bracket notation. Dot 
notation is useful when you know that a specific key name exists within the object. */

obj1["a string!"] = "Yay!";
console.log(obj1["a string!"]); // logs "Yay!"

/* An object method is an object property that contains a function definition: */

obj1.fun1 = function () {
  return "Sup";
};

console.log(obj1.fun1); // logs the actual function definition
console.log(obj1.fun1()); // the parentheses cause the function attached to fun1 to execute