<script type="text/javascript">
function Person(name) {
this.name = name;
} Person.prototype.getName = function() {
return this.name;
} function Author(name, books) {
Person.call(this, name); // 定义：调用一个对象的一个方法，以另一个对象替换当前对象。
this.books = books; // Add an attribute to Author.
} Author.prototype = new Person(); // 设置原型链
Author.prototype.constructor = Author; // 设置构造属性
Author.prototype.getBooks = function() { // 添加方法
return this.books;
}; var author = [];
author[] = new Author('Dustin Diaz', ['JavaScript Design Patterns']);
author[] = new Author('Ross Harmes', ['JavaScript Design Patterns']); alert(author[].getName()); //输出 Dustin Diaz
alert(author[].getBooks()); //输出 JavaScript Design Patterns
alert(author[].getName()); //输出 Ross Harmes
alert(author[].getBooks()); //输出 JavaScript Design Patterns
</script>
功力不够，无法理解
进一步升级提取
<script type="text/javascript">
/* 扩展函数 */
function extend(subClass, superClass) {
var F = function() {};
F.prototype = superClass.prototype; // F已成superClass父类
subClass.prototype = new F(); //子类继承父类的原子
subClass.prototype.constructor = subClass;
} /* Person类 */ function Person(name) {
this.name = name;
} Person.prototype.getName = function() {
return this.name;
} /* Author类 */ function Author(name, books) {
Person.call(this, name);
this.books = books;
}
extend(Author, Person); Author.prototype.getBooks = function() {
return this.books;
}; var author = []; //定义数组
author[] = new Author('Dustin Diaz', ['JavaScript Design Patterns']);
author[] = new Author('Ross Harmes', ['JavaScript Design Patterns']); alert(author[].getName()); //输出 Dustin Diaz
alert(author[].getBooks()); //输出 JavaScript Design Patterns
alert(author[].getName()); //输出 Ross Harmes
alert(author[].getBooks()); //输出 JavaScript Design Patterns
</script>
进一步改进，太牛逼了，作者
<script type="text/javascript">
/* 扩展函数 */
function extend(subClass, superClass) {
var F = function() {};
F.prototype = superClass.prototype;
subClass.prototype = new F();
subClass.prototype.constructor = subClass; subClass.superclass = superClass.prototype;
if(superClass.prototype.constructor == Object.prototype.constructor) {
superClass.prototype.constructor = superClass;
}
} /* Person类 */ function Person(name) {
this.name = name;
} Person.prototype.getName = function() {
return this.name;
} /* Author类 */ function Author(name, books) {
Author.superclass.constructor.call(this, name);
this.books = books;
}
extend(Author, Person); Author.prototype.getBooks = function() {
return this.books;
}; Author.prototype.getName = function() {
var name = Author.superclass.getName.call(this);
return name + ', Author of ' + this.getBooks().join(', ');
}; var author = []; //定义数组
author[] = new Author('Dustin Diaz', ['JavaScript Design Patterns']);
author[] = new Author('Ross Harmes', ['JavaScript Design Patterns']); alert(author[].getName()); //输出 Dustin Diaz , Author of JavaScript Design Patterns
alert(author[].getBooks()); //输出 JavaScript Design Patterns
alert(author[].getName()); //输出 Ross Harmes , Author of JavaScript Design Patterns
alert(author[].getBooks()); //输出 JavaScript Design Patterns
</script>