how to implement regions/code collapse in javascript

Question

How can you implement regions a.k.a. code collapse for JavaScript in Visual Studio?

If there are hundreds of lines in javascript, it\'ll be more understandable using

Answer 1

It works like a charm in PhpStorm

//#region My Region 1
    ...
//#endregion

//#region My Region 2
    ...
//#endregion