-
Notifications
You must be signed in to change notification settings - Fork 1
/
test.html
160 lines (133 loc) · 4.53 KB
/
test.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="iter.js"></script>
<script src="assert.js"></script>
</head>
<body>
<script>
/*
where:where,
map:map,
concat:concat,
take:take,
groupBy:groupBy,
sort:sort
max:max,
min:min,
avg:avg,
sum:sum,
count:count,
stat:stat,
reduce:reduce,
toArray:toArray,
*/
//example and test
//data
var source=[1,2,3,4,5,6,7,8,9,10];
var person = [{first:'god',second:'pig',age:25,male:'m'},
{first:'wang',second:'er',age:26,male:'m'},
{first:'zhang',second:'san',age:18,male:'m'},
{first:'li',second:'si',age:19,male:'m'},
{first:'god',second:'dog',age:21,male:'m'},
{first:'god',second:'cat',age:22,male:'m'}];
//-------- where ------
var arr = iter(source)
.where(function(v){return v%2==0})
.toArray();
zl.assertArr(arr,[2,4,6,8,10],'get odds from 1 to 10');
var arr = iter(person)
.where(function(v){return v.first=='god'})
.toArray();
zl.assertArr(arr,[person[0],person[4],person[5]],
'get persons whose first name is "god"');
//--------------- map ---------
//取下标大于等于4的数组成员，并
var arr = iter(source)
.where(function(v){return v>4})//v表示数组中的值，i表示index
.map(function(v){return v*2})//where，还有[4]到[9] 6个元素，所以i从0-5
.toArray();
//[5,6,7,8,9,10] [0,1,2,3,4,5]
zl.assertArr(arr,[10,12,14,16,18,20],'map pass');
var arr = iter(person)
.where(function(v){return v.age<20})
.map(function(v){return v.first+v.second
+',birth:'+(2014-v.age)})
.toArray();
zl.assertArr(arr,['zhangsan,birth:1996','lisi,birth:1995'],'map pass again')
//----concat----
var arr = iter(source)
.where(function(v){return v>7})
.concat(['a','b'])//注意：v2+v1，如果不传入匿名函数，默认是v1+v2
.toArray();
zl.assertArr(arr,[8,9,10,'a','b'],'concat pass');
//take
var arr = iter(source)
.take(5)
.toArray();
zl.assertArr(arr,[1,2,3,4,5],'take pass')
//-----min,max,count,sum,avg-----
//stat 功能上相当于上面5个函数
var min = iter(source).min();
var max = iter(source).max();
var count = iter(source).count();
var sum = iter(source).sum();
var avg = iter(source).avg();
zl.assert(min==1
&&max==10
&&count==10
&&sum==55
&&avg==5.5,'scalar functions pass');
var stat = iter(source).stat();
zl.assert(stat.min==1
&&stat.max==10
&&stat.count==10
&&stat.sum==55
&&stat.avg==5.5,'stat function pass');
//sort
var src = [2,5,6,8,1,4,9,10,7,3];
var arr= iter(src)
.sort()
.map(function(v){return v*2})
.toArray();
zl.assertArr(arr,[2,4,6,8,10,12,14,16,18,20],'sort pass');
var arr= iter(person)
.sort(function(v1,v2){return v1.age-v2.age})
.toArray();
zl.assert(arr[0].first=='zhang'&& arr[0].age==18
&& arr[1].first=='li'&&arr[1].age==19
&& arr[2].first=='god'&&arr[2].age==21
&& arr[3].first=='god'&&arr[3].age==22
&& arr[4].first=='god'&&arr[4].age==25
&& arr[5].first=='wang'&&arr[5].age==26,'sort pass');
//----groupBy------
var books = [{'name':'js1','category':'js','price':10}
,{'name':'js2','category':'js','price':20}
,{'name':'js3','category':'js','price':30}
,{'name':'js4','category':'js','price':40}
,{'name':'node1','category':'node','price':50}
,{'name':'node2','category':'node','price':60}
,{'name':'node3','category':'node','price':70}
,{'name':'other1','category':'other','price':80}
,{'name':'other2','category':'other','price':90}]
//按category分类，然后找出有3本book以上的分类
//groupBy后，序列的每一个元素变成{key:..,values:...}
//key为分类的主键，values为数组，里面是该分类的下的所有内容
var arr = iter(books)
.groupBy('category')
.where(function(v){return v.values.length>=3})
.toArray();
var jsBook = arr[0];
var nodeBook = arr[1];
var jsV = jsBook.values;
var nodeV = nodeBook.values;
zl.assert(jsBook.key=='js'&& nodeBook.key=='node'
&&jsV.length==4&&nodeV.length==3
&&jsV[0].name=='js1'&&jsV[1].name=='js2'&&jsV[2].name=='js3'&&jsV[3].name=='js4'
&&nodeV[0].name=='node1'&&nodeV[1].name=='node2'&&nodeV[2].name=='node3',
'groupBy pass');
</script>
</body>
</html>