function Person(name) {
    this.name = name;
}

var person = new Person("Ang Lee")

console.log("the prototype of person is", Object.getPrototypeOf(person));

function Person(name) {
    this.name = name;
    this.foo = function() { ... }
}

Person.bar = function() { ... }

"getPrototypeOf" in Object.prototype; // false