<html>
<body>
<script language="javascript">
function Object(firstName, lastName){
this.firstName = firstName;
this.lastName = lastName;
}
function function1(){
myObject.age = function3;
alert(myObject.age());
}
function function2(){
myObject.favoriteColor = "Blue";
alert(myObject.favoriteColor);
}
function function3(){
return 34;
}
var myObject = new Object("John", "Smith");
</script>
<button onclick="function2();">Add Property</button>
<button onclick="function1();">Add Method</button>
<button onclick="alert(myObject.constructor);">Constructor</button>
<button onclick="alert(myObject.isPrototypeOf(myObject));">PrototypeOf</button>
<button onclick="alert(myObject.hasOwnProperty("lastName"));">HasProperty</button>
</body>
</html>