一 .for in 循环 1.获取json中的键(key)与值(value): var data = {name:'张三',age:'20岁',sex:'男'}; for (var a in data) { console.log(a); /*属性名*/ console.log(data[a]); /*属性值*/ }; 2.获取数组中的值 var a = ['apple','banana','pear']; for(var i in a){ console.log(i); /*在数组中的位置*/
<script type="text/javascript"> getJson('age'); function getJson(key){ var jsonObj={"name":"傅红雪","age":"24","profession":"刺客"}; //1.使用eval方法 var eValue=eval('jsonObj.'+key); alert
<script type="text/javascript"> getJson('age'); function getJson(key){ var jsonObj={"name":"傅红雪","age":"24","profession":"刺客"}; //1.使用eval方法 var eValue=eval('jsonObj.'+key); alert
在PostgreSQL数据库中有一列为JSON,要获取JSON中得数据可以用下面sql: select orderno as OrderNo ,amount as Amount ,ordertime as OrderTime , recordtype as RecordType from jsonb_to_recordset(( --特定方法 select array_to_json(array_agg(data)) --转换成一个数组 from wallet_details where id
1.1.1 对象与JSON转化 @Test public void toJSON() throws IOException{ Jedis jedis = new Jedis("192.168.126.174",6379); User user = new User(); user.setId(100); user.setName("json测试"); user.setAge(100); user.setSex("男"); ObjectMapper