JSON 数组结构变化
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JSON Array Structure Variations
提问by MikeS
Below are 3 JSON Array structure formats...
以下是 3 种 JSON 数组结构格式...
The first one, the one outlined at JSON.org, is the one I am familiar with:
第一个，JSON.org 上概述的，是我熟悉的：
Format #1
格式#1
{"People": [
{
"name": "Sally",
"age": "10"
},
{
"name": "Greg",
"age": "10"
}
]}
The second one is a slight variation that names the elements of the array. I personally don't care for it; you don't name elements of an array in code (they are accessed by index), why name them in JSON?
第二个是命名数组元素的轻微变体。我个人不关心它；你不在代码中命名数组的元素（它们通过索引访问），为什么用 JSON 命名它们？
Format #2
格式#2
{"People": [
"Person1": {
"name": "Sally",
"age": "10"
},
"Person2": {
"name": "Greg",
"age": "10"
}
]}
This last one is another variation, quite similar to Format #2, but I have a hunch this one is incorrect because it appears to have extra curly braces where they do not belong.
最后一个是另一种变体，与Format #2非常相似，但我有一种预感这是不正确的，因为它似乎在不属于它们的地方有额外的花括号。
Format #3
格式#3
{"People": [
{
"Person1": {
"name": "Sally",
"age": "10"
}
},
{
"Person2": {
"name": "Greg",
"age": "10"
}
}
]}
Again, I'm confident that Format #1is valid as it is the JSON Array format outlined at JSON.org. However, what about Format #2and Format #3? Are either of those considered valid JSON? If yes, where did those formats come from? I do not see them outlined at JSON.org or on Wikipedia.
同样，我相信格式 #1是有效的，因为它是 JSON.org 中概述的 JSON 数组格式。但是，格式 #2和格式 #3呢？其中任何一个都被认为是有效的 JSON？如果是，这些格式来自哪里？我没有在 JSON.org 或 Wikipedia 上看到它们的概述。
回答by Eugen Rieck
Both #1 and #3 are (nearly - there are commas missing) valid JSON, but encode different structures:
#1 和 #3 都是（几乎 - 缺少逗号）有效的 JSON，但编码不同的结构：
- #1 gives you an Arrayof Objects, each with name and age String properties
- #3 gives you an Arrayof Objects, each with a single Object property, each with name and age String properties.
- ＃1给你一个数组的对象，每一个姓名和年龄的String类型属性
- ＃3给你一个数组的对象，每一个对象属性，每一个姓名和年龄String类型的属性。
The #2 is invalid: Arrays (as defined by [... ]) may not contain property names.
#2 无效：数组（由[...定义]）可能不包含属性名称。
回答by Muhammad Fahad
Solution For Format#1By default:
格式#1 的解决方案 默认情况下：
array=[];
object={};
JSON Code:
JSON 代码：
var Json = {
People:[]
};
Json.People.push({
"name": "Sally",
"age": "10"
});
Json.People.push({
"name": "Greg",
"age": "10"
});
JSON Result:
JSON 结果：
{"People":
[
{
"name": "Sally",
"age": "10"
},
{
"name": "Greg",
"age": "10"
}
]
}
{"People":
[
{
"name": "Sally",
"age": "10"
},
{
"name": "Greg",
"age": "10"
}
]
}
