// examplevararr=[{"code":"000001","name":"上证指数","type":"指数","value":1000},{"code":"000002","name":"A股指数","type":"指数","value":2000},{"code":"000003","name":"B股指数","type":"指数","value":3000}];// 查询 code 大于 "000002" 并且 name 等于 "B股指数" 的数据，参数名前要加上符号 "@"// 查询语法关键词(用过sql的都懂的)：AND OR <> NOT = > < >= <= // 也可自己在代码中扩展自定义查询语法arr.Query('@code>="000002" OR @value=3000');return[{...},{...},...];// 取数组第一个元素arr.Query('@code>="000002" OR @value=3000').First();return{...};// 按照表达式输出结果arr.Select('@code,@value=3000,"nametype":@name+"#"+@type');return[{"code":"000001","value":"1000","nametype":"上证指数#指数"},{...},...];// 按照表达式拼接字符串arr.Join('@name+"#"+@type','|');return"上证指数#指数|A股指数#指数|B股指数#指数";// 查询第一个符合条件的元素的下标arr.IndexOf('@code>="000002"');return1;// 删除并返回符合条件的元素arr.Remove('@code>="000002" OR @value=3000');return[{...},{...},...];// 正序arr.OrderBy("code");return[{...},{...},...];// 倒序arr.OrderByDesc("code");return[{...},{...},...];// 遍历JSONArray.Each(function(index,item){...});// 是否包含指定元素JSONArray.Contains('test');returntrue|false;// 返回指定数量的元素JSONArray.Take(3);return[{...},{...},{...}];// 求和JSONArray.Sum('@colname1');return64;JSONArray.Sum('@colname1 + @colname1');return128;// 去重JSONArray.Distinct();return[{...},{...},...];// 分组查询JSONArray.GroupBy('@colname1,@colname2');return[{colname1:"test",colename2:999,Data:[{...},...]},{...},...];