How do you get an array of object.key(not values, not string, not only keys) from an object?

Question

I have this object

let listItem = {
  name: "Lydia",
  accountId: "HGVe",
  fleetType: "Haulage"
};

I want to get an array which will be exactly like this:

[listItem.name, listItem.accountId, listItem.fleetType]

The values in the array don't have to be strings or values as you can see.

So every element of the array is going to be VariableName.key (not a string).

!!!!To be 100% clear, these 2 results are NOT what I need:

["listItem.name", "listItem.accountId", "listItem.fleetType"] // results are strings: WRONG
["Lydia", "HGVe", "Haulage"] // results are values: WRONG

As you can see above, the correct array have in each element a reference to the precise object.key

Answer 1

Based on your edit, you want to store object references of listItem object's properties.

let listItem = {
  name: "Lydia",
  accountId: "HGVe",
  fleetType: "Haulage"
};

But this object's properties are not objects but primitive values. Primitive values don't have a reference. See this answer for more information.

You can create a string object using String constructor. And use Object.values() to get these values.

let listItem = {
  name: new String("Lydia"),
  accountId: new String("HGVe"),
  fleetType: new String("Haulage")
};

let refs = Object.values(listItem);

console.log(refs);

You now have references stored in an array. You can't have [listItem.name, listItem.accountId, listItem.fleetType] without them getting evaluated to those references.

---

Previous Answer:

You can wrap this object in another object and use Object.keys() to get its name.

Then use Object.keys() on original object to get its keys.

let listItem = {
  name: "Lydia",
  accountId: "HGVe",
  fleetType: "Haulage"
};

var obj = { listItem };
var name = Object.keys(obj)[0];
var result = [];

Object.keys(listItem).forEach((key) => {
  result.push(name + "." + key);
});

console.log(result);

So every element of the array is going to be VariableName.key (not a string).

Every value should have a data type. So what would be the data type of these values? They are likely to be strings.