let's say I have this object:

let obj = {
  name: "John",
  location: {
    country: "France",
    town: "Paris",
    street: { number: 23, name: "Napoleon" },
  },
};

let streetNumber = obj.location.street.number;

Is there a simpler method to get the street number without writing that big line of code "obj.location.street.number"? Imagine if I would have 10 levels in a nested object. Actually I have a very very big object with unique keys and it takes too much time to write that chain until I get the desired value.

CodePudding user response：

you can do something like this, but I don't suggest you, it's better to go property by property, like you did.

function recursion(obj) {
  for (const prop in obj) {
    if (obj.hasOwnProperty(prop)) {
      if (typeof obj[prop] == 'object') return recursion(obj[prop])
      if (prop == 'number') return obj[prop]
    }
  }
}

CodePudding user response：

I think you may have to create a function for simplicity.

const getStreetNumber = (obj) => obj["location"]["street"]["number"];