从对象中删除未定义的属性 [英] Remove undefined properties from object

问题描述

我想递归地清理任何未定义的字段，或者有一个空对象作为父对象，如下所示:

示例:

<预><代码>{一种": {乙":{c":未定义，}},d":未定义，e":{f:未定义，},G": {你好'，j":未定义，},"k": "L",米":{n":{o":{z":未定义，}},"p": 'toto'}}

我期待以下结果:

<预><代码>{G": {你好'，},"k": 'L',米":{"p": 'toto'}}

感谢您的帮助

解决方案

function cleanArray(actual) {var newArray = new Object();newArray=JSON.parse(JSON.stringify(actual));返回新数组；}变量对象={一种": {乙":{c":未定义，}},d":未定义，e":{f:未定义，},G": {你好'，j":未定义，},"k": "L",米":{n":{o":{z":未定义，}},"p": 'toto'}};console.log(cleanArray(obj));

I would like to recursively clean any fields which are undefined, or have an empty object as parent like this following:

Example:

{
  "a": {
    "b": {
      "c": undefined,
    }
  },
  "d": undefined,
  "e": {
    f: undefined,
  },
  "g": {
     "h": 'I',
     "j": undefined,
  },
  "k": "L",
  "m": {
     "n": {
       "o": {
         "z": undefined,
       }
     },
    "p": 'toto'
   }
}

I am expecting the following result :

{
  "g": {
    "h": 'I',
  },
  "k": 'L',
  "m": {
    "p": 'toto'
  }
}

Thank you for your help

解决方案

function cleanArray(actual) {
  var newArray = new Object();
 newArray=JSON.parse(JSON.stringify(actual));
  return newArray;
}
var obj={
  "a": {
    "b": {
      "c": undefined,
    }
  },
  "d": undefined,
  "e": {
    f: undefined,
  },
  "g": {
     "h": 'I',
     "j": undefined,
  },
  "k": "L",
  "m": {
     "n": {
       "o": {
         "z": undefined,
       }
     },
    "p": 'toto'
   }
};
console.log(cleanArray(obj));

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