javascript - JS : How to extract nested string of object?

Question

我得到了一个具有以下数据结构的数组:

[
  { 
    _id: 'dgPMHw3ivRSp3wyWe',
    content: { 
      en: [{ content: 'foo', extended: 'bar' }, {...}],
      it: [{ content: 'any', extended: 'thing' }, {...}]
    },
    order: 1,
    parent: 'Dn59y87PGhkJXpaiZ'
  },
  {...}
]

我需要修改此数组，通过选择特定语言的第一个元素来仅获取 content 的字符串值。

因此对于英语，结果应该是:

[
  { 
    _id: 'dgPMHw3ivRSp3wyWe',
    content: 'foo',
    extended: bar,
    order: 1,
    parent: 'Dn59y87PGhkJXpaiZ'
  }
]

我知道我可以得到字符串

const language = 'en'
array.forEach(doc => {
  console.log(doc.content[language][0].content)
  console.log(doc.content[language][0].extended)
})

但是我如何替换它才能得到我的结果？

Answer 1

以下是无需列出每个属性的方法:

var array = [{
  _id: 'dgPMHw3ivRSp3wyWe',
  "content": {
    en: {
      content: 'foo',
      extended: 'bar'
    },
    it: {
      content: 'any',
      extended: 'thing'
    }
  },
  order: 1,
  parent: 'Dn59y87PGhkJXpaiZ'
}];

const language = "en";
array = array.map(doc => {
  doc = Object.assign(doc, doc.content[language]);
  return doc;
});
console.log(array);