通过深层嵌套对象中的特定键查找所有值 [英] Find all values by specific key in a deep nested object

问题描述

如何在深层嵌套对象中按特定键查找所有值?

How would I find all values by specific key in a deep nested object?

例如，如果我有一个这样的对象:

For example, if I have an object like this:

const myObj = {
  id: 1,
  children: [
    {
      id: 2,
      children: [
        {
          id: 3
        }
      ]
    },
    {
      id: 4,
      children: [
        {
          id: 5,
          children: [
            {
              id: 6,
              children: [
                {
                  id: 7,
                }
              ]
            }
          ]
        }
      ]
    },
  ]
}

如何通过id的键来获取此obj的所有嵌套中所有值的数组.

How would I get an array of all values throughout all nests of this obj by the key of id.

注意:children是一致的名称，id不会在children对象之外.

Note: children is a consistent name, and id's won't exist outside of a children object.

因此，从obj，我想产生一个像这样的数组:

So from the obj, I would like to produce an array like this:

const idArray = [1, 2, 3, 4, 5, 6, 7]

推荐答案

您可以创建如下的递归函数:

You could make a recursive function like this:

idArray = []

function func(obj) {
  idArray.push(obj.id)
  if (!obj.children) {
    return
  }

  obj.children.forEach(child => func(child))
}

样本片段:

const myObj = {
  id: 1,
  children: [{
      id: 2,
      children: [{
        id: 3
      }]
    },
    {
      id: 4,
      children: [{
        id: 5,
        children: [{
          id: 6,
          children: [{
            id: 7,
          }]
        }]
      }]
    },
  ]
}

idArray = []

function func(obj) {
  idArray.push(obj.id)
  if (!obj.children) {
    return
  }

  obj.children.forEach(child => func(child))
}

func(myObj)
console.log(idArray)

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