Not getting all the keys of nested object using Javascript-CodePudding

I am trying to fetch all the keys of one nested object using Javascript but as per my code its not working as expected. I am explaining my code below.

let jsonObj = {
    "service":[
        {
            "name":"restservice",
            "device":"xr-1",
            "interface-port":"0/0/2/3",
            "interface-description":"uBot testing for NSO REST",
            "addr":"10.10.1.3/24",
            "mtu":1024
        }
    ],
    "person": {
    "male": {
      "name": "infinitbility"
    },
    "female": {
      "name": "aguidehub"
    }
  }
}

const getNestedKeys = (data, keys) => {
  if(!(data instanceof Array) && typeof data == 'object'){
    Object.keys(data).forEach(key => {
      keys.push(key);
      const value = data[key];
      if(typeof value === 'object' && !(value instanceof Array)){
         getNestedKeys(value, keys);
      }
   });
  }
  return keys
}
let result = getNestedKeys(jsonObj, []);

console.log('result', result);

Here I am not getting the keys present inside the service array. I need to search all the keys present inside one nested object using Javascript.

CodePudding user response：

you can do this

const readAllKeys = obj => {
  if(typeof obj !== 'object'){
    return []
  }
  if(Array.isArray(obj)){
    return obj.flatMap(readAllKeys)
  }
  
  return [...Object.keys(obj), ...Object.values(obj).flatMap(readAllKeys)]
}


let jsonObj = {
    "service":[
        {
            "name":"restservice",
            "device":"xr-1",
            "interface-port":"0/0/2/3",
            "interface-description":"uBot testing for NSO REST",
            "addr":"10.10.1.3/24",
            "mtu":1024
        }
    ],
    "person": {
    "male": {
      "name": "infinitbility"
    },
    "female": {
      "name": "aguidehub"
    }
  }
}

console.log(readAllKeys(jsonObj))

CodePudding user response：

You are asking for it to work with "service" key which is an array, but your code explicitly checks type and if it's array it just ignores it. Here is the code adjusted to work with array too.

let jsonObj = {
    "service":[
        {
            "name":"restservice",
            "device":"xr-1",
            "interface-port":"0/0/2/3",
            "interface-description":"uBot testing for NSO REST",
            "addr":"10.10.1.3/24",
            "mtu":1024
        }
    ],
    "person": {
    "male": {
      "name": "infinitbility"
    },
    "female": {
      "name": "aguidehub"
    }
  }
}

const getNestedKeys = (data, keys) => {
  if(data instanceof Array) {
      data.forEach(value => {
          getNestedKeys (value, keys);
      });
  }

  if(!(data instanceof Array) && typeof data == 'object'){
    Object.keys(data).forEach(key => {
      keys.push(key);
      const value = data[key];
      if(typeof value === 'object'){
         getNestedKeys(value, keys);
      }
   });
  }
  return keys
}
let result = getNestedKeys(jsonObj, []);

console.log('result', result);