<script type="text/javascript">/* 增加函數 */function augment(receivingClass, givingClass) { for(methodName in givingClass.prototype) {  if(!receivingClass.prototype[methodName]) {   receivingClass.prototype[methodName] = givingClass.prototype[methodName];  } }}/* 改進的增加函數 */function augment(receivingClass, givingClass) { if(arguments[2]) { // Only give certain methods.  for(var i = 2, len = arguments.length; i < len; i++) {   receivingClass.prototype[arguments[i]] = givingClass.prototype[arguments[i]];  } } else { // Give all methods.  for(methodName in givingClass.prototype) {   if(!receivingClass.prototype[methodName]) {    receivingClass.prototype[methodName] = givingClass.prototype[methodName];   }  } }}var Author = function Author(name, books) { // 構造函數 this.name = name; this.books = books || 'default value';};Author.prototype = { getName: function() {  return this.name; }, getBooks: function() {  return this.books; }};var Editor = function Editor() {};Editor.prototype = { hello: function() {  return 'Hello,'+this.name; }};augment(Author, Editor);var author = new Author('Ross Harmes', ['JavaScript Design Patterns']);console.log(author.getName());console.log(author.getBooks());console.log(author.hello());</script>