How can I access random key value pairs with JS?

Im creating an app that randomly generates information for a person. One being, the state, city, zip, and area codes that they reside in. Obviously I cannot randomly generate a city, without accessing that cities state. i.e. "Miami, New York". How can I efficiently write this code with nested data that I can access randomly? So if ‘omaha’ is chosen at random it should also access those value pairs with it.

let cities = {
  omaha: {
    city: "Omaha",
    state: "Nebraska",
    zip: ["68102", "68116", "68198"],
    areaCode: ["302", "402"],
  },

  saltLake: {
    city: "Salt Lake City",
    state: "Utah",
    zip: ["84095", "84065", "84121"],
    areaCode: ["385", "801"],
  },
};

>Solution :

so lets say, omaha city is chosen randomly in the code, then you can either save it a variable like :

let cityChoosen = 'omaha'

or you can use the ‘omaha’ city name directly.

you can city’s key value pairs like this

if you are saving the city name in variable then:

cities[cityChoosen].city // Output : 'Omaha'
cities[cityChoosen].state //Output :'Nebraska'
cities[cityChoosen].areaCode //Output :["302", "402"]

and if you want to use ‘omaha’ city directly as a string, then you can use it like below :

cities['omaha'].city // Output : 'Omaha'
cities['omaha'].state //Output :'Nebraska'
cities['omaha'].areaCode //Output :["302", "402"]