What is the most practical Structure of Webapp

Question

So let's say I want to build a Webapp with JS. What would be the best way to build a Project like this? Or where is a good place to start?
What is a good structure to set this up, like how would it be the most practical in a real life scenario(e.g. a Webapp at a company)?
Do I need a web server?
Those are some random questions I got on my mind I hope they are a bit understandable.

Answer 1

Follow this course, it cover a lot of important things, you will learn how to organize js code, how to use tool like webpack, best practices in real projects...
https://www.theodinproject.com/lessons/javascript-organizing-your-javascript-code-introduction

Answer 2

I didn't get your question properly.

Here's what I understood.

MVC, MVVM
Folder structure

Do I need a web server?
- Make your computer a server.