How to create JSON with cities and districts?

Question

JavaScript

Good day. There are two selects. In one of the options there is a list of cities, in the other - areas of cities. When you select a city, a list of districts is loaded. There are no problems with loading, but I don’t know how to create such a JSON object correctly.

Answer 1

Download from here ready-made and format as you want, well, or use it from here