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Part 6

Prerequisite​

#BIGWORD - Syntactic Sugar : A different way to Type something that doesn’t change how it works under the hood.

Section 7 - Odds and Ends​

Chapter 65- Initialization​

var peope = [
  {
    firstname: ‘Joe’,
    lastname: ‘Doe’,
    addresses: [
      ‘111 Main st’,
      ‘222 Third st’
    ]
  },
  {
    firstname: ’Jane’,
    lastname: ‘Doe’,
    addresses: [
      ‘333 Main st’,
      ‘444 Fifth st’
    ],
    greet: function(){
      return ‘Hello’;
    }
  }
];

Chapter 66- 'tyepof', 'instaceof', and Figuring Out What Something Is​

var a = 3;
console.log(typeof a); //number

var b = ‘Hello’;
console.log(typeof b); //string

var c = {};
console.log(typeof c); //object

var d = [];
console.log(typeof d); //object //weird
console.log(Object.prototype.toString.call(d)); //object Array //better

function Person(name){
	this.name = name;
}

var e = new Person(‘Jane’);
console.log(typeof e); // object

console.log(e instanceof Person); //true
console.log(typeof undefined); //undefined // makes sense
console.log(typeof null); //object // a bug since, like , forever..

var z = function() { };
console.log(typeof z); //function

Chapter 67- Strict Mode​

Example 1
var person ;
persom = {};
console.log(persom) // Object {}

Example 2
‘use strict’
var person ;
persom = {};
console.log(persom) // Uncaught reference error : persom is not defined
Credits​