JavaScript Scopes

// Global Scope
var bear = "Brother Bear";

function greetTheBear() {
  return alert(bear);
}

// Function Scope (Local Scope)
function greetTheBigBear() {
  var greet = "BearHunter";
  return alert(greet);
}
alert(greet); //Error here !!!!

// Function Scope (Nested)
function hailTheHusky(huskyName) {
  function caplitalize() {
    return huskyName.toUpperCase();
  }
  var capitalized = caplitalize();
  return capitalized;
}
alert(hailTheHusky("HuskyBear"));