lenafaure

movieStar(); // Prints “TypeError : movieStar is not a function”

var movieStar = function () {  // This is a function expression and therefore not hoisted
  var name = “Philip Seymour Hoffman”;
  console.log(name); 
}

lenafaure

var movieStar = function () {
  var name = “Philip Seymour Hoffman”;
  console.log(name); 
}

movieStar(); // Prints “Philipp Seymour Hoffman”

lenafaure

var businessStar;

function businessStar(){
  console.log(“Gary Vaynerchuck”);
}

console.log(businessStar); // Prints “function businessStar(){ console.log(“Gary Vaynerchuck”);}”

lenafaure

var businessStar = “Gary Vaynerchuck”;

function businessStar(){
  console.log(“Gary Vaynerchuck”);
}

console.log(businessStar); // Prints “Gary Vaynerchuck”

lenafaure

var greeting = "Hi, I am a global variable"; // global scope variable

function sayHello() {
  var greeting = "Hi, I am a local variable"; // local scope variable
  console.log(greeting);
}

sayHello(); // Prints "Hi, I am a local variable"
console.log(greeting); 	// Prints "Hi, I am a global variable"

lenafaure

var greeting = "Hi there!"; // global scope

function sayHello() {
  console.log(greeting);
}

sayHello(); // Prints "Hi there !"

lenafaure

var myVariable = "Hi, I am a global variable";

function sayHello() {
  myVariable = "Hi, I am locally produced!";
  console.log(myVariable);
}

console.log(myVariable); 	// Prints "Hi, I am a global variable"
sayHello();               // Prints "Hi, I am locally produced!"
console.log(myVariable);	// Prints "Hi, I am locally produced!"

lenafaure

var myJob = "Developer";

function showJob() {
  var myJob = "Designer";
  console.log(myJob);
}

showJob(); // Prints "Designer"

lenafaure

var myVariable = "global";
printVariable(); // Prints "local"

function printVariable() {
  var myVariable = "local";
  console.log(myVariable);
}

printVariable(); // Prints "local"

lenafaure

var customer = {
  firstName: "John",
  lastName: "Doe",
  greetCustomer: function(){
    // We use "this" instead of repeating "customer"
    console.log("Hello again " + this.firstName + " " + this.lastName + "!");
  }
}
customer.greetCustomer(); // Prints "Hello again John Doe!"