How to take out a javascript array into external json and then connect it?

Question

JavaScript

Please tell me how to transfer the javascript array of one file to an external json or ini file, and then connect it to the first file and output it. There can be several arrays.

const aaa = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
const bbb = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];

Answer 1

One array can be placed in a json file like this:
array.json Several like this: dictionary.json And fetch it asynchronously with fetch :["January","February"]
{"aaa":["January","February"],"bbb":["Jan","Feb"]}

fetch('/data/dictionary.json') // URL json-файла
.then((r) => r.json())
.then((dict) => {
  console.log(dict.aaa[1]); // "February"
})
.catch((err) => console.error(err))
;