How to find and replace value in JSON?

Question

I have an object like this:

{
  "responses": {
    "firstKey": {
      "items": {
        "name": "test name one"
      }
    },
    "anotherKey": {
      "items": {
        "name": "test name two"
      }
    },
    "oneMoreKey": {
      "items": {
        "name": "John"
      }
    }
  }
}

I need to find all 'name' keys and replace its value only if it starts with 'test name' then return new JSON object:

{
  "responses": {
    "firstKey": {
      "items": {
        "name": "N/A"
      }
    },
    "anotherKey": {
      "items": {
        "name": "N/A"
      }
    },
    "oneMoreKey": {
      "items": {
        "name": "John"
      }
    }
  }
}

The problem is that the keys are not consistent through the objects, i.e. 'firstKey', 'secondKey'... I tried ForEach but it seems to be too cumbersome... So I need either lodash or vanila JavaScript to replace the values.

Answer 1

Do something like this. Convert to string replace using regex (add key to regex as well) and then convert back.

var data = {
  "responses": {
    "firstKey": {
      "items": {
        "name": "test name one"
      }
    },
    "anotherKey": {
      "items": {
        "name": "test name two"
      }
    },
    "oneMoreKey": {
      "items": {
        "name": "John"
      }
    }
  }
};

var originalMsg = JSON.stringify(data);
console.log(data)
console.log(originalMsg)
var updatedMsg = originalMsg.replace(/test name [a-z]*/g, "N/A");
console.log(updatedMsg)
var newObj = JSON.parse(updatedMsg); 
console.log(newObj);