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comparison core-javascript/javascript-exercises/class-exercises.js @ 191:74fc8108fef2 javascript-exercises

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$ python py/remove_answers.py
author jf3243
date Mon, 21 Nov 2011 16:50:01 +0000
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190:6e302e558f09 191:74fc8108fef2
1 var something;
2
3 TEST('class attributes', function()
4 {
5 var point = {};
6 var Point = SimpleClass(point);
7
8 point.__init__ = function(x, y){
9 // Please write your answer here.
10 };
11
12 var pt = Point(3, 4);
13
14 assert( pt.x === 3 );
15 assert( pt.y === 4 );
16
17 // Please write your answer here.
18
19 assert( pt.__classname__ === 'Point' );
20
21 });
22
23
24 TEST('class methods', function()
25 {
26 var actual;
27 var expect;
28
29 var person = {};
30 var Person = SimpleClass(person);
31
32 // Initialise a person to have a name and an age.
33 // Please write your answer here.
34
35
36 // Test that we can create a person.
37 var someone = Person('Bob', 26);
38 assert( someone.name === 'Bob' );
39 assert( someone.age === 26 );
40
41
42 // Add a greet method to the class prototype object.
43 person.greet = function(another){
44 // Please write your answer here.
45 };
46
47 // Test the greet method.
48 var tmp = someone.greet('Alice');
49 assert( tmp = something );
50
51 // Add a goodbye method.
52 // Please write your answer here.
53
54 expect = "Goodbye, Alice. It was a pleasure to meet you.";
55 actual = someone.goodbye('Alice');
56 assert( actual === expect );
57
58 // A flaw in the design.
59 var someone_else = Person('Alice', 31);
60
61 // Figure out what we get.
62 expect = something;
63 actual = someone.greet(someone_else);
64 assert( actual === expect );
65 });