javascript.chicken_eser

javascript
#===
var name = "Steven";
name; // Steven
#===
var name = "Steven";
if(name === "Steven"){
  "What a nice mohawk";
}else{
  "Your hair is alright, I guess";
}
// What a nice mohawk
#===
var person = {
  name: "Steven"
};
person["name"] // Steven
person.name    // Steven
#===
var person = {
  name: "Steven",
  profession: "Teacher"
};
person.likes = "Bourbon";
person.likes; // Bourbon
#===
function sayHello(){
  return "Hello";
}
sayHello(); // Hello
#===
function sayHelloTo(person){
  return "Hello, " + person;
}
sayHelloTo("Bob"); // Hello, Bob
#===
var bob = {
  name: "Bob",
  introduce: function(){
    return "Oh Hai! I'm " + this.name;
  }
};

bob.introduce(); // Oh Hai! I'm Bob
#===
function Person(name){
  this.name = name;
}
var bob = new Person("Bob");
bob.name; // Bob
#===
function Person(name){
  this.name = name;
}
Person.prototype.introduce = function(){
  return "Oh Hai! I'm " + this.name;
}
var bob = new Person("Bob");
bob.introduce(); // Oh Hai! I'm Bob
#===
var outside = "I'm outside";
function whatIsOutside(){
  return outside;
}

whatIsOutside(); // I'm outside;
#===
function youCanNotSeeMe(){
  var secret = 42;
}

youCanNotSeeMe();
secret; // Error: secret is not defined.
#===
var canSee = true;
function performMagicTrick(){
  canSee = false;
}

canSee; // true
performMagicTrick(); 
canSee; // false
#===
var theBoss = "My Wife";
function assertDominanceInMyHead(){
  var theBoss = "Me!!"
}

theBoss; // My Wife
assertDominanceInMyHead();
theBoss; // My Wife
#===
(function(){
  return "If a function is defined and never called, does it make a sound?"
}); // nothing happens
#===
(function(){
  return "Right Away!"
})(); // Right Away!
#===
function add(first, second){
  return first + second;
}
function calculate(number1, number2, calculationFunction){
  return calculationFunction(number1, number2)
}
calculate(5, 5, add); // 10 
#===
function calculate(number1, number2, calculationFunction){
  return calculationFunction(number1, number2)
}
calculate(5, 5, function(first, second){
  return first + second;
}); // 10