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---
language: json
contributors:
- ["Anna Harren", "https://github.com/iirelu"]
translators:
- ["Zach Zhang", "https://github.com/checkcheckzz"]
filename: learnjson-cn.json
lang: zh-cn
---
JSON是一个极其简单的数据交换格式。按[json.org](https://json.org)说的，它对人类易读易写，对机器易解析易生成。
一段JSON可以是下文列出的类型的任意值，但实际一般按以下两种方式之一呈现：
* 一个键值对的集合(`{ }`)。按不同语言，这可能被理解为对象/记录/结构体/字典/哈希表/有键列表/关联数组
* 一个有序的值列表(`[ ]`)。按不同语言，这可能被理解为数组/向量/列表/序列
纯正的JSON实际上没有注释，但是大多数解析器都接受C-风格(//, /\* \*/)的注释。一些解析器还容许trailing comma，即最后一个数组元素或最后一个对象属性之后的逗号。不过为了兼容性最好避免。
因此，本教程的一切都会是100%有效的JSON。幸亏，它的表达能力很丰富。
支持的数据类型：
* 字符串：`"hello"`、`"\"A quote.\""`、`"\u0abe"`、`"Newline.\n"`
* 数字：`23`、`0.11`、`12e10`、`3.141e-10`、`1.23e+4`
* 对象：`{ "key": "value" }`
* 数组：`["Values"]`
* 其它：`true`、`false`、`null`
```json
{
"key": "value",
"keys": "must always be enclosed in double quotes",
"numbers": 0,
"strings": "Hellø, wørld. All unicode is allowed, along with \"escaping\".",
"has bools?": true,
"nothingness": null,
"big number": 1.2e+100,
"objects": {
"comment": "Most of your structure will come from objects.",
"array": [0, 1, 2, 3, "Arrays can have anything in them.", 5],
"another object": {
"comment": "These things can be nested, very useful."
}
},
"silliness": [
{
"sources of potassium": ["bananas"]
},
[
[1, 0, 0, 0],
[0, 1, 0, 0],
[0, 0, 1, "neo"],
[0, 0, 0, 1]
]
],
"alternative style": {
"comment": "check this out!"
, "comma position": "doesn't matter, if it's before the next key, it's valid"
, "another comment": "how nice"
},
"whitespace": "Does not matter.",
"that was short": "And done. You now know everything JSON has to offer."
}
```
## 进一步阅读
* [JSON.org](https://www.json.org/json-zh.html) 完美图解JSON的一切
* [JSON Tutorial](https://www.youtube.com/watch?v=wI1CWzNtE-M) 简要介绍
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