1+ < script >
2+ var Coffee = function ( ) { } ;
3+ Coffee . prototype . boilwater = function ( ) {
4+ console . log ( '把水煮沸' ) ;
5+ } ;
6+ Coffee . prototype . brewCoffeeGriends = function ( ) {
7+ console . log ( '用沸水冲咖啡' ) ;
8+ } ;
9+ Coffee . prototype . pourInCup = function ( ) {
10+ console . log ( '把咖啡倒进杯子' ) ;
11+ } ;
12+ Coffee . prototype . addSugarAndMilk = function ( ) {
13+ console . log ( '加糖和牛奶' ) ;
14+ } ;
15+ Coffee . prototype . init = function ( ) {
16+ this . boilwater ( ) ;
17+ this . brewCoffeeGriends ( ) ;
18+ this . pourInCup ( ) ;
19+ this . addSugarAndMilk ( ) ;
20+ } ;
21+ var coffee = new Coffee ( ) ;
22+ coffee . init ( ) ;
23+
24+ var Tea = function ( ) { } ;
25+ Tea . prototype . boilWater = function ( ) {
26+ console . log ( '把水煮沸' ) ;
27+ } ;
28+ Tea . prototype . steepTeaBag = function ( ) {
29+ console . log ( '用沸水浸泡茶叶' ) ;
30+ } ;
31+ Tea . prototype . pourInCup = function ( ) {
32+ console . log ( '把茶水倒进杯子' ) ;
33+ } ;
34+ Tea . prototype . addLemon = function ( ) {
35+ console . log ( '加柠檬' ) ;
36+ } ;
37+ Tea . prototype . init = function ( ) {
38+ this . boilWater ( ) ;
39+ this . steepTeaBag ( ) ;
40+ this . pourInCup ( ) ;
41+ this . addLemon ( ) ;
42+ } ;
43+ var tea = new Tea ( ) ;
44+ tea . init ( ) ;
45+ </ script >
46+
47+ < script >
48+ var Beverage = function ( ) { } ;
49+ Beverage . prototype . boilWater = function ( ) {
50+ console . log ( '把水煮沸' ) ;
51+ } ;
52+
53+ Beverage . prototype . brew = function ( ) { } ; // 空方法，应该由子类重写
54+ Beverage . prototype . pourInCup = function ( ) { } ;
55+ Beverage . prototype . addCondiments = function ( ) { } ;
56+ Beverage . prototype . init = function ( ) {
57+ this . boilWater ( ) ;
58+ this . brew ( ) ;
59+ this . pourInCup ( ) ;
60+ this . addCondiments ( ) ;
61+ } ;
62+
63+ var Coffee1 = function ( ) { } ;
64+ Coffee1 . prototype = new Beverage ( ) ;
65+
66+ Coffee1 . prototype . brew = function ( ) {
67+ console . log ( '用沸水冲咖啡' ) ;
68+ } ;
69+ Coffee1 . prototype . pourInCup = function ( ) {
70+ console . log ( '把咖啡倒进杯子' ) ;
71+ } ;
72+ Coffee1 . prototype . addCondiments = function ( ) {
73+ console . log ( '加糖和牛奶' ) ;
74+ } ;
75+ var coffee1 = new Coffee1 ( ) ;
76+ coffee1 . init ( ) ;
77+
78+ var Tea1 = function ( ) { } ;
79+ Tea1 . prototype = new Beverage ( ) ;
80+ Tea1 . prototype . brew = function ( ) {
81+ console . log ( '用沸水浸泡茶叶' ) ;
82+ } ;
83+ Tea1 . prototype . pourInCup = function ( ) {
84+ console . log ( '把茶倒进杯子' ) ;
85+ } ;
86+ Tea1 . prototype . addCondiments = function ( ) {
87+ console . log ( '加柠檬' ) ;
88+ } ;
89+ var tea1 = new Tea1 ( ) ;
90+ tea1 . init ( ) ;
91+ </ script >
92+
93+ < script >
94+ var Beverage2 = function ( ) { } ;
95+ Beverage2 . prototype . boilWater = function ( ) {
96+ console . log ( '把水煮沸' ) ;
97+ } ;
98+ Beverage2 . prototype . brew = function ( ) {
99+ throw new Error ( '子类必须重写brew 方法' ) ;
100+ } ;
101+ Beverage2 . prototype . pourInCup = function ( ) {
102+ throw new Error ( '子类必须重写pourInCup 方法' ) ;
103+ } ;
104+ Beverage2 . prototype . addCondiments = function ( ) {
105+ throw new Error ( '子类必须重写addCondiments 方法' ) ;
106+ } ;
107+ Beverage2 . prototype . customerWantsCondiments = function ( ) {
108+ return true ;
109+ } ;
110+ Beverage2 . prototype . init = function ( ) {
111+ this . boilWater ( ) ;
112+ this . brew ( ) ;
113+ this . pourInCup ( ) ;
114+ if ( this . customerWantsCondiments ( ) ) { // 如果挂钩返回true，则需要调料
115+ this . addCondiments ( ) ;
116+ }
117+ } ;
118+ var CoffeeWithHook = function ( ) { } ;
119+ CoffeeWithHook . prototype = new Beverage2 ( ) ;
120+ CoffeeWithHook . prototype . brew = function ( ) {
121+ console . log ( '用沸水冲咖啡' ) ;
122+ } ;
123+ CoffeeWithHook . prototype . pourInCup = function ( ) {
124+ console . log ( '把咖啡倒进杯子' ) ;
125+ } ;
126+ CoffeeWithHook . prototype . addCondiments = function ( ) {
127+ console . log ( '加糖和牛奶' ) ;
128+ } ;
129+ CoffeeWithHook . prototype . customerWantsCondiments = function ( ) {
130+ return Window . confirm ( '请问需要调料吗？' ) ;
131+ } ;
132+ var coffeewithhook = new CoffeeWithHook ( ) ;
133+ </ script >
134+
135+ < script >
136+ var Beverage3 = function ( param ) {
137+ var boilWater = function ( ) {
138+ console . log ( '把水煮沸' ) ;
139+ } ;
140+ var brew = param . brew || function ( ) {
141+ throw new Error ( '必须传递brew方法' ) ;
142+ } ;
143+ var pourInCup = param . pourInCup || function ( ) {
144+ throw new Error ( '必须传递pourInCup 方法' ) ;
145+ } ;
146+ var addCondiments = param . addCondiments || function ( ) {
147+ throw new Error ( '必须传递addCondiments 方法' ) ;
148+ } ;
149+ var F = function ( ) { } ;
150+ F . prototype . init = function ( ) {
151+ boilWater ( ) ;
152+ brew ( ) ;
153+ pourInCup ( ) ;
154+ addCondiments ( ) ;
155+ } ;
156+ return F ;
157+ } ;
158+ var Coffee3 = Beverage3 ( {
159+ brew :function ( ) {
160+ console . log ( '用沸水冲泡咖啡' ) ;
161+ } ,
162+ pourInCup :function ( ) {
163+ console . log ( '把咖啡倒进杯子' ) ;
164+ } ,
165+ addCondiments :function ( ) {
166+ console . log ( '加糖和牛奶' ) ;
167+ }
168+ } ) ;
169+
170+ var Tea3 = Beverage3 ( {
171+ brew :function ( ) {
172+ console . log ( '用沸水浸泡茶叶' ) ;
173+ } ,
174+ pourInCup :function ( ) {
175+ console . log ( '把茶倒进杯子' ) ;
176+ } ,
177+ addCondiments :function ( ) {
178+ console . log ( '加柠檬' ) ;
179+ }
180+ } ) ;
181+
182+ var coffeee = new Coffee3 ( ) ;
183+ coffeee . init ( ) ;
184+ var teaa = new Tea3 ( ) ;
185+ teaa . init ( ) ;
186+ </ script >
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