<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>043</title>
</head>
<body>
</body>
<script type="text/javascript">
(function () {
function origObject(){
this.val1 = 'a';
this.val2 = 'b';
}
origObject.prototype.returnVal1 = function(){
return this.val1;
}
origObject.prototype.returnVal2 = function(){
return this.val2;
}
function newObject(){
this.val3 = 'c';
origObject.call(this);
}
newObject.prototype = Object.create(origObject.prototype);
newObject.prototype.getValues = function(){
return this.val1 + " " + this.val2 + " " + this.val3;
}
var obj = new newObject();
console.log(obj instanceof(newObject));
console.log(obj instanceof(origObject));
console.log(obj.getValues());
})();
(function () {
function Book (title, author){
this.getTitle = function(){
return "Title: " + title;
};
this.getAuthor = function(){
return "Author: " + author;
};
}
function TechBook (title, author, category) {
this.getCategory = function(){
return "Technical Category: " + category;
}
this.getBook = function(){
return this.getTitle() + " " + author + " " + this.getCategory();
}
Book.apply(this, arguments);
}
TechBook.prototype = Object.create(Book.prototype);
TechBook.prototype.constructor = TechBook;
var newBook = new TechBook("The JavaScript Cookbook", "Shelley Powers", "Programming");
console.log(newBook.getBook());
console.log(newBook.getTitle());
console.log(newBook.getAuthor());
console.log(newBook.getCategory());
})();
</script>
</html>
