JSON is built on two structures:
- A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array.
- An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.
JSON结构的两种定义：对象、数组
根据JSON的字面含义
JSON (JavaScript Object Notation) is a lightweight data-interchange format.
一直认为object才叫做json，是key，value 键值对的对象形式才算，昨天和同事沟通数据接口发现这块存在歧义，事实证明我的理解是存在误区的；
arry 也同样可以序列化为json，展示形式不一样，如上官方描述，两种数据结构，key／val 键值对和有序序列；