2012mjm

function bark() {
  console.log("Woof!");
}

bark.animal = "dog";

2012mjm

let greeting;
greetign = {}; // Typo!
console.log(greetign);

2012mjm

class Chameleon {
  static colorChange(newColor) {
    this.newColor = newColor;
    return this.newColor;
  }

  constructor({ newColor = "green" } = {}) {
    this.newColor = newColor;
  }
}

2012mjm

let a = 3;
let b = new Number(3);
let c = 3;

console.log(a == b);
console.log(a === b);
console.log(b === c);

2012mjm

let c = { greeting: "Hey!" };
let d;

d = c;
c.greeting = "Hello";
console.log(d.greeting);

2012mjm

const bird = {
  size: "small"
};

const mouse = {
  name: "Mickey",
  small: true
};

2012mjm

+true;
!"Lydia";

2012mjm

const shape = {
  radius: 10,
  diameter() {
    return this.radius * 2;
  },
  perimeter: () => 2 * Math.PI * this.radius
};

console.log(shape.diameter());
console.log(shape.perimeter());

2012mjm

for (var i = 0; i < 3; i++) {
  setTimeout(() => console.log(i), 1);
}

for (let i = 0; i < 3; i++) {
  setTimeout(() => console.log(i), 1);
}

2012mjm

function sayHi() {
  console.log(name);
  console.log(age);
  var name = "Lydia";
  let age = 21;
}

sayHi();