Javascript 如何在递归解析JSON对象后正确显示其结果？

我有一些基于给定的键数组递归删除JSON对象中属性的代码。它能够找到删除所有相关的关键点，但我不知道如何显示最终结果将删除所有关键点

我在for循环之后添加了以下内容：

if (index == -1) {
    console.log(obj)
}

这个想法是，一旦它到达顶部并完成for循环，它应该显示新对象。问题是，它在显示属性时缺少很多根键

function deleteJSONProperties (obj, keys){
    var index;
    for (var prop in obj) {
        if(obj.hasOwnProperty(prop)){
            switch(typeof(obj[prop])){
                case 'string':
                    index = keys.indexOf(prop);
                    if(index > -1){
                        delete obj[prop];
                    }
                break;
                case 'object':
                    index = keys.indexOf(prop);
                    if(index > -1){
                        delete obj[prop];
                    }else{
                        deleteJSONProperties (obj[prop], keys);
                    }
                break;
                case 'boolean':
                    index = keys.indexOf(prop);
                    if(index > -1){
                        delete obj[prop];
                    }
                break;
                case 'number':
                    index = keys.indexOf(prop);
                    if(index > -1){
                        delete obj[prop];
                    }
                break;
            }
        }
    }
}

以下是一些测试数据：

var jsonObj2 = [
    {
      "_id": "5d14e86629cba445323ab05a",
      "age": 20,
      "tags": [
        "minim",
        "occaecat",
        "veniam",
        "consectetur"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Alfreda Boone"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Mcgee Oneill"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Kaye Dejesus"
        }
      ],
      "greeting": "Hello, undefined! You have 6 unread messages.",
      "favoriteFruit": "banana"
    },
    {
      "_id": "5d14e866b05cc8b27c2361d9",
      "age": 23,
      "tags": [
        "consequat",
        "officia",
        "consectetur",
        "fugiat"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Brooke Smith"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Hodges Nielsen"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Lesa Hall"
        }
      ],
      "greeting": "Hello, undefined! You have 3 unread messages.",
      "favoriteFruit": "apple"
    },
    {
      "_id": "5d14e866db71274862f509be",
      "age": 32,
      "tags": [
        "aute",
        "officia",
        "esse",
        "voluptate"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Rivers Anderson"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Ingram Mccall"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Melton Quinn"
        }
      ],
      "greeting": "Hello, undefined! You have 9 unread messages.",
      "favoriteFruit": "banana"
    },
    {
      "_id": "5d14e866ceeadef742940bf0",
      "age": 27,
      "tags": [
        "mollit",
        "laboris",
        "consequat",
        "nisi"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Delia Woodward"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Kristin Riley"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Floyd Lowe"
        }
      ],
      "greeting": "Hello, undefined! You have 4 unread messages.",
      "favoriteFruit": "apple"
    },
    {
      "_id": "5d14e866de69ec724cea8da4",
      "age": 30,
      "tags": [
        "velit",
        "fugiat",
        "aute",
        "deserunt"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Osborn Hubbard"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Dianna Daugherty"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Sims Guy"
        }
      ],
      "greeting": "Hello, undefined! You have 10 unread messages.",
      "favoriteFruit": "apple"
    },
    {
      "_id": "5d14e86643a18516e353146a",
      "age": 34,
      "tags": [
        "id",
        "veniam",
        "voluptate",
        "esse"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Solis Nolan"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Maricela Colon"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Gilda Ortiz"
        }
      ],
      "greeting": "Hello, undefined! You have 6 unread messages.",
      "favoriteFruit": "apple"
    },
    {
      "_id": "5d14e8662452730e42d257d4",
      "age": 23,
      "tags": [
        "velit",
        "cupidatat",
        "duis",
        "dolore"
      ],
      "friends": [
        {
          "inheritedValue": 0,
          "ExpectedValue": "Cole Roman"
        },
        {
          "inheritedValue": 1,
          "ExpectedValue": "Kimberley Carney"
        },
        {
          "inheritedValue": 2,
          "ExpectedValue": "Lowery Mcdonald"
        }
      ],
      "greeting": "Hello, undefined! You have 9 unread messages.",
      "favoriteFruit": "strawberry"
    }
  ];

var keys = ['inheritedValue', 'effectiveValue','ExpectedValue'];
deleteJSONProperties(jsonObj2, keys);

预期的输出应该是移除键的原始JSON对象。在我的解决方案中，我丢失了一些信息，例如，没有显示

"tags": [
        "minim",
        "occaecat",
        "veniam",
        "consectetur"
      ]

我会：

["minim",
 "occaecat",
 "veniam",
 "consectetur"
]

有条件的实际结果

[ 'minim', 'occaecat', 'veniam', 'consectetur' ]
[ {}, {}, {} ]
{ _id: '5d14e86629cba445323ab05a',
  age: 20,
  tags: [ 'minim', 'occaecat', 'veniam', 'consectetur' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 6 unread messages.',
  favoriteFruit: 'banana' }
[ 'consequat', 'officia', 'consectetur', 'fugiat' ]
[ {}, {}, {} ]
{ _id: '5d14e866b05cc8b27c2361d9',
  age: 23,
  tags: [ 'consequat', 'officia', 'consectetur', 'fugiat' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 3 unread messages.',
  favoriteFruit: 'apple' }
[ 'aute', 'officia', 'esse', 'voluptate' ]
[ {}, {}, {} ]
{ _id: '5d14e866db71274862f509be',
  age: 32,
  tags: [ 'aute', 'officia', 'esse', 'voluptate' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 9 unread messages.',
  favoriteFruit: 'banana' }
[ 'mollit', 'laboris', 'consequat', 'nisi' ]
[ {}, {}, {} ]
{ _id: '5d14e866ceeadef742940bf0',
  age: 27,
  tags: [ 'mollit', 'laboris', 'consequat', 'nisi' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 4 unread messages.',
  favoriteFruit: 'apple' }
[ 'velit', 'fugiat', 'aute', 'deserunt' ]
[ {}, {}, {} ]
{ _id: '5d14e866de69ec724cea8da4',
  age: 30,
  tags: [ 'velit', 'fugiat', 'aute', 'deserunt' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 10 unread messages.',
  favoriteFruit: 'apple' }
[ 'id', 'veniam', 'voluptate', 'esse' ]
[ {}, {}, {} ]
{ _id: '5d14e86643a18516e353146a',
  age: 34,
  tags: [ 'id', 'veniam', 'voluptate', 'esse' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 6 unread messages.',
  favoriteFruit: 'apple' }
[ 'velit', 'cupidatat', 'duis', 'dolore' ]
[ {}, {}, {} ]
{ _id: '5d14e8662452730e42d257d4',
  age: 23,
  tags: [ 'velit', 'cupidatat', 'duis', 'dolore' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 9 unread messages.',
  favoriteFruit: 'strawberry' }
[ { _id: '5d14e86629cba445323ab05a',
    age: 20,
    tags: [ 'minim', 'occaecat', 'veniam', 'consectetur' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 6 unread messages.',
    favoriteFruit: 'banana' },
  { _id: '5d14e866b05cc8b27c2361d9',
    age: 23,
    tags: [ 'consequat', 'officia', 'consectetur', 'fugiat' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 3 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e866db71274862f509be',
    age: 32,
    tags: [ 'aute', 'officia', 'esse', 'voluptate' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 9 unread messages.',
    favoriteFruit: 'banana' },
  { _id: '5d14e866ceeadef742940bf0',
    age: 27,
    tags: [ 'mollit', 'laboris', 'consequat', 'nisi' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 4 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e866de69ec724cea8da4',
    age: 30,
    tags: [ 'velit', 'fugiat', 'aute', 'deserunt' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 10 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e86643a18516e353146a',
    age: 34,
    tags: [ 'id', 'veniam', 'voluptate', 'esse' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 6 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e8662452730e42d257d4',
    age: 23,
    tags: [ 'velit', 'cupidatat', 'duis', 'dolore' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 9 unread messages.',
    favoriteFruit: 'strawberry' } ]

for循环结束时没有条件的实际结果

[ 'minim', 'occaecat', 'veniam', 'consectetur' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e86629cba445323ab05a',
  age: 20,
  tags: [ 'minim', 'occaecat', 'veniam', 'consectetur' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 6 unread messages.',
  favoriteFruit: 'banana' }
[ 'consequat', 'officia', 'consectetur', 'fugiat' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e866b05cc8b27c2361d9',
  age: 23,
  tags: [ 'consequat', 'officia', 'consectetur', 'fugiat' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 3 unread messages.',
  favoriteFruit: 'apple' }
[ 'aute', 'officia', 'esse', 'voluptate' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e866db71274862f509be',
  age: 32,
  tags: [ 'aute', 'officia', 'esse', 'voluptate' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 9 unread messages.',
  favoriteFruit: 'banana' }
[ 'mollit', 'laboris', 'consequat', 'nisi' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e866ceeadef742940bf0',
  age: 27,
  tags: [ 'mollit', 'laboris', 'consequat', 'nisi' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 4 unread messages.',
  favoriteFruit: 'apple' }
[ 'velit', 'fugiat', 'aute', 'deserunt' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e866de69ec724cea8da4',
  age: 30,
  tags: [ 'velit', 'fugiat', 'aute', 'deserunt' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 10 unread messages.',
  favoriteFruit: 'apple' }
[ 'id', 'veniam', 'voluptate', 'esse' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e86643a18516e353146a',
  age: 34,
  tags: [ 'id', 'veniam', 'voluptate', 'esse' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 6 unread messages.',
  favoriteFruit: 'apple' }
[ 'velit', 'cupidatat', 'duis', 'dolore' ]
{}
{}
{}
[ {}, {}, {} ]
{ _id: '5d14e8662452730e42d257d4',
  age: 23,
  tags: [ 'velit', 'cupidatat', 'duis', 'dolore' ],
  friends: [ {}, {}, {} ],
  greeting: 'Hello, undefined! You have 9 unread messages.',
  favoriteFruit: 'strawberry' }
[ { _id: '5d14e86629cba445323ab05a',
    age: 20,
    tags: [ 'minim', 'occaecat', 'veniam', 'consectetur' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 6 unread messages.',
    favoriteFruit: 'banana' },
  { _id: '5d14e866b05cc8b27c2361d9',
    age: 23,
    tags: [ 'consequat', 'officia', 'consectetur', 'fugiat' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 3 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e866db71274862f509be',
    age: 32,
    tags: [ 'aute', 'officia', 'esse', 'voluptate' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 9 unread messages.',
    favoriteFruit: 'banana' },
  { _id: '5d14e866ceeadef742940bf0',
    age: 27,
    tags: [ 'mollit', 'laboris', 'consequat', 'nisi' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 4 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e866de69ec724cea8da4',
    age: 30,
    tags: [ 'velit', 'fugiat', 'aute', 'deserunt' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 10 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e86643a18516e353146a',
    age: 34,
    tags: [ 'id', 'veniam', 'voluptate', 'esse' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 6 unread messages.',
    favoriteFruit: 'apple' },
  { _id: '5d14e8662452730e42d257d4',
    age: 23,
    tags: [ 'velit', 'cupidatat', 'duis', 'dolore' ],
    friends: [ {}, {}, {} ],
    greeting: 'Hello, undefined! You have 9 unread messages.',
    favoriteFruit: 'strawberry' } ]

---

您没有删除空对象，因此它们仍然是空的，现在可以吗

“严格使用”；
函数deleteJSONProperties（对象、键）{
var指数；
var itemsNo=0；
用于（obj中的var prop）{
itemsNo++；
if（对象拥有自己的财产（财产））{
开关（类型（obj[prop]））{
大小写“string”：
索引=键。索引of（prop）；
如果（索引>-1）{
项目无--；
删除obj[prop]；
}
打破
案例“对象”：
索引=键。索引of（prop）；
如果（索引>-1）{
项目无--；
删除obj[prop]；
}否则{
如果（！deleteJSONProperties（对象[prop]，键））{
项目无--；
删除obj[prop]；
}
}
打破
“布尔”大小写：
索引=键。索引of（prop）；
如果（索引>-1）{
项目无--；
删除obj[prop]；
}
打破
案件编号：
索引=键。索引of（prop）；
如果（索引>-1）{
项目无--；
删除obj[prop]；
}
打破
}
}其他项目无--；
}
如果（！itemsNo）删除对象[prop]；
退货项目否；
}
var jsonObj2=[
{
“_id”：“5d14e86629cba445323ab05a”，
“年龄”：20岁，
“标签”：[
“最小值”，
“奥卡卡特”，
“威尼斯”，
“奉献者”
],
“朋友”：[
{
“inheritedValue”：0，
“期望值”：“Alfreda Boone”
},
{
“继承值”：1，
“ExpectedValue”：“Mcgee Oneill”
},
{
“继承值”：2，
“期望值”：“Kaye Dejesus”
}
],
“问候语”：“您好，未定义！您有6条未读邮件。”，
“最喜欢的水果”：“香蕉”
},
{
“_id”：“5d14e866b05cc8b27c2361d9”，
“年龄”：23岁，
“标签”：[
“consequeat”，
“官方”，
“奉献者”，
“福吉亚”
],
“朋友”：[
{
“inheritedValue”：0，
“ExpectedValue”：“Brooke Smith”
},
{
“继承值”：1，
“期望值”：“Hodges Nielsen”
},
{
“继承值”：2，
“期望值”：“Lesa Hall”
}
],
“问候语”：“您好，未定义！您有3封未读邮件。”，
“最喜欢的水果”：“苹果”
},
{
“_id”：“5d14e866db71274862f509be”，
“年龄”：32岁，
“标签”：[
“奥特”，
“官方”，
“埃塞”，
“呕吐”
],
“朋友”：[
{
“inheritedValue”：0，
“期望值”：“Rivers Anderson”
},
{
“继承值”：1，
“ExpectedValue”：“Ingram Mccall”
},
{
“继承值”：2，
“期望值”：“梅尔顿·奎因”
}
],
“问候语”：“您好，未定义！您有9条未读邮件。”，
“最喜欢的水果”：“香蕉”
},
{
“_id”：“5d14e866ceeadef742940bf0”，
“年龄”：27岁，
“标签”：[
“莫利特”，
“laboris”，
“consequeat”，
“尼西”
],
“朋友”：[
{
“inheritedValue”：0，
“期望值”：“Delia Woodward”
},
{
“继承值”：1，
“ExpectedValue”：“Kristin Riley”
},
{
“继承值”：2，
“期望值”：“Floyd Lowe”
}
],
“问候语”：“您好，未定义！您有4封未读邮件。”，
“最喜欢的水果”：“苹果”
},
{
“_id”：“5d14e866de69ec724cea8da4”，
“年龄”：30岁，
“标签”：[
“velit”，
“福吉雅特”，
“奥特”，
“卸载”
],
“朋友”：[
{
“inheritedValue”：0，
“ExpectedValue”：“奥斯本·哈伯德”
},
{
“继承值”：1，
“期望值”：“Dianna Daugherty”
},
{
“继承值”：2，
“ExpectedValue”：“Sims Guy”
}
],
“问候语”：“您好，未定义！您有10条未读邮件。”，
“最喜欢的水果”：“苹果”
},
{
“_id”：“5d14e86643a18516e353146a”，
“年龄”：34岁，
“标签”：[
“身份证”，
“威尼斯”，
“呕吐”，
“埃塞”
],
“朋友”：[
{
“inheritedValue”：0，
“ExpectedValue”：“索利斯诺兰”
},
{
“继承值”：1，
“ExpectedValue”：“Maricela Colon”
},
{
“继承值”：2，
“期望值”：“Gilda Ortiz”
}
],
“问候语”：“您好，未定义！您有6条未读邮件。”，
“最喜欢的水果”：“苹果”
},
{
“_id”：“5d14e8662452730e42d257d4”，
“年龄”：23岁，
“标签”：[
“velit”，
“丘比特”，
“酒后驾车”，
“多洛尔”
],
“朋友”：[
{
“inheritedValue”：0，
“ExpectedValue”：“Cole Roman”
},
{
“继承值”：1，
“期望值”：“金伯利卡尼”
},
{
“继承值”：2，
“前