Question

我有一个看起来像这样的JSON响应，我想得到这个用户的所有帖子都有一个状态2：

user = {
  "name": "John",
  "posts": [
    {
      id: 1,
      state: 1,
      title: "Hello"
    },
    {
      id: 2,
      state: 1,
      title: "Hi"
    },
    {
      id: 3,
      state: 2,
      title: "World"
    },
    {
      id: 4,
      state: 3,
      title: "Hey"
    },
    {
      id: 5,
      state: 2,
      title: "Goodbye"
    }
  ]
}

我该怎么做？

我想得到像我这样的答案

result = {
  {
    id: 3,
    state: 2,
    title: "World"
  },
  {
    id: 5,
    state: 2,
    title: "Goodbye"
  },
}

Answer 1

post user内的,不包含有效对象（每个对象后丢失filter()）。

尝试使用数组的var user = { "name": "John", "posts": [ { id: 1, state: 1, title: "Hello" }, { id: 2, state: 1, title: "Hi" }, { id: 3, state: 2, title: "World" }, { id: 4, state: 3, title: "Hey" }, { id: 5, state: 2, title: "Goodbye" } ] } var state2Post = user.posts.filter(p => p.state == 2); console.log(state2Post);：

Gurmokhs-MBP:rest Gurmokh$ python
Python 2.7.12 |Anaconda 4.2.0 (x86_64)| (default, Jul  2 2016, 17:43:17) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org
>>> import psycopg2
if psycopg2.connect("dbname='postgres' user='postgres' host='localhost'"):
...     print "connection made"
... 
connection made
>>>

如何使用JavaScript获取基于其键的元素

1 个答案: