How do I search a key or a value in a Nested Json object/array? [closed]

Question

Assuming I have JSON data response as follows below and a Search Input on my lightning component.

I want to search for a key or value and get a JS array of results.

For example :

Searching for "firstName" will bring results :

[{"firstName": "Tom"},{"firstName": "Maria"},{"firstName": "James"}]

Searching for "2" will bring results :

[{ "id": "2"}]

Data response :

{
  "employees": {
    "employee": [
      {
        "id": "1",
        "firstName": "Tom",
        "lastName": "Cruise",
        "photo": "https://pbs.twimg.com/profile_images/735509975649378305/B81JwLT7.jpg"
      },
      {
        "id": "2",
        "firstName": "Maria",
        "lastName": "Sharapova",
        "photo": "https://pbs.twimg.com/profile_images/3424509849/bfa1b9121afc39d1dcdb53cfc423bf12.jpeg"
      },
      {
        "id": "3",
        "firstName": "James",
        "lastName": "Bond",
        "photo": "https://pbs.twimg.com/profile_images/664886718559076352/M00cOLrh.jpg"
      }
    ]
  }
}

Been trying few approaches - but couldn't get a recursion work for all nested elements. This will work only on the first level keys :

  const givenPath = component.get('v.searchInput');
  for(let path in data) {
        if(data.hasOwnProperty(givenPath)) {
            newData = {
                [givenPath] : data[givenPath]
            }
        }
 }

Answer 1

I wrote an article on a similar topic, i had to find all the attributes "attrName" in a JSON, maybe you can get ideas. The article is here

I wrote a function like:

//JavaScript Lightning (Salesforce)
removeAttributes : function(obj){
   if(!obj instanceof Array && !obj instanceof Object) {
       return;
   }     
   for(var i in obj) {
       if(obj instanceof Array || (obj instanceof Object && obj.hasOwnProperty(i))) {
           if(i == 'attributes') {
               //delete obj.attributes;
               //**INSTEAD OF DELETE YOU CAN PUSH INTO THE ARRAY**
           }
           this.removeAttributes(obj[i]);
       }
   }
}

The code represents a recursive function, which accepts an object as a parameter (JSON is a JavaScript object) and searches for the various properties by checking all the Arrays and properties of the objects.

for each properties it is checked if it is an Array, an Object or if it is a parameter you are looking for ---> if (i = 'attributes')

I hope I have been helpful