JavaScript Funtions Example

javascript-funcs.js

foo(1, 2, 3); // Works fine because we declared function using
              //  the function literal at the bottom
bar(1, 2, 3); // => ReferenceError: bar is not defined

// The functions name is optional
// Here we are storing an anonymous function in a variable bar
var bar = function (a, b, c) {
  // ...
};

// functions can be stored
var obj = {
  baz: function () {
  },
  // you may use the optional name if recursion is needed
  fib: function fibbinator (n) {
    // ...
    return fibbinator(n-1) + fibbinator(n-2);
  }
};

function foo (a, b, c) {
  // You can nest functions
  function innerFoo() {
    // ...
  }
  return innerFoo();
}