1 //创建一张user数据表，并定义一个DB的jsonDB别名
 2 var data = [{username:'张三',sex:'男',birthday:{year:2000,month:6,day:18}},{username:'李红',sex:'女',birthday:{year:1986,month:9,day:22}}];
 3 //以下方法可以通过两种方式获取别名，一个是通过init方法获取(推荐)，一个是获取jsonDB()方法的返回值
 4 //以后示例中都将使用init()方法创建的别名操作数据
 5 var jDB = jsonDB(data,'user').init('DB');
 6
 7 //插入一条新的数据
 8 data = {username:'李想',sex:'男',birthday:{year:1990,month:2,day:15}};
 9 DB.insert(data,'user');
10
11 //查询姓名为李红的性别,where条件必须加()否者会出现错误
12 var result =DB.query('select sex from user where (username="李红")');
13 //结果：[{"sex":"女"}]
14
15 //查询2000年之前出生的且按出生年先后排序
16 var result =DB.query('select * from user where (birthday.year<2000) order by birthday.year asc');
17 //结果：[{"username":"李红","sex":"女","birthday":{"year":1986,"month":9,"day":22}},{"username":"李想","sex":"男","birthday":{"year":1990,"month":2,"day":15}}]
18
19 //查询年龄最小的两个人
20 var result =DB.query('select * from user order by birthday.year desc limit 2');
21 //查询结果：[{"username":"张三","sex":"男","birthday":{"year":2000,"month":6,"day":18}},{"username":"李想","sex":"男","birthday":{"year":1990,"month":2,"day":15}}]
22
23 //修改李红的出生日期
24 var result =DB.query('update user set birthday.year=1991 where (username="李红") limit 1');
25 //影响条数为一条，可以通过DB.findAll('user')获取全部数据查看是否被修改成功
26
27 //删除姓名为李想的数据
28 var result =DB.query('delete from user where (username="李想") limit 1');
29 //影响条数为一条，可以通过DB.findAll('user')获取全部数据查看是否被删除成功
30
31 //数据库中所有数据
32 //[{"username":"张三","sex":"男","birthday":{"year":2000,"month":6,"day":18}},{"username":"李红","sex":"女","birthday":{"year":1991,"month":9,"day":22}}] 

 1 //向数据表插入一条数据
 2 DB.table('user').add({username:'王帅',sex:'男',birthday:{year:1995,month:10,day:23}});
 3
 4 //查询所有人出生日期，并按出生年排序，由于之前使用table('user')定义为user表，所以可以省略，table方法定义是一直有效的，除非是重新设定了
 5 var result = DB.field('username,birthday').order('birthday.year').select();
 6 //查询结果  [{"username":"李红","birthday":{"year":1991,"month":9,"day":22}},{"username":"王帅","birthday":{"year":1995,"month":10,"day":23}},{"username":"张三","birthday":{"year":2000,"month":6,"day":18}}]
 7
 8 //先插入一些数据，方便后面的检索操作
 9 DB.table('user').add({username:'李亨',sex:'男',birthday:{year:2008,month:8,day:8}})
10 .add({username:'张琦',sex:'男',birthday:{year:1990,month:10,day:23}})
11 .add({username:'李媛芳',sex:'女',birthday:{year:1985,month:2,day:28}})
12 .add({username:'李果果',sex:'女',birthday:{year:2002,month:3,day:15}})
13 .add({username:'张源',sex:'男',birthday:{year:2005,month:12,day:5}})
14 .add({username:'王丽娜',sex:'女',birthday:{year:1992,month:5,day:12}});
15
16 //高级查询之模糊搜索
17 //查询所有李姓成员(正则查找法)
18 var result = DB.field(["username"]).where('username.match(/^李/)').select();
19 //查询结果[{"username":"李红"},{"username":"李亨"},{"username":"李媛芳"},{"username":"李果果"}]
20
21 //查询所有李姓成员(字符串搜索法)
22 var result = DB.field(["username"]).where('username.indexOf("李")=0').select();
23 //查询结果[{"username":"李红"},{"username":"李亨"},{"username":"李媛芳"},{"username":"李果果"}]
24
25 //查询所有在1990年到1995年出生的人
26 var result = DB.field(["username","birthday"]).where('birthday.year>=1990 and birthday.year<=1995').order('birthday.year').select();
27 //查询结果：[{"username":"张琦","birthday":{"year":1990,"month":10,"day":23}},{"username":"李红","birthday":{"year":1991,"month":9,"day":22}},{"username":"王丽娜","birthday":{"year":1992,"month":5,"day":12}},{"username":"王帅","birthday":{"year":1995,"month":10,"day":23}}]