[hos234]

The only difference today is the number of platforms and browsers your code has to run on. And there are a zillion JS libraries to simplify that problem.

The main thing is to just pick one that is popular and has been around for a couple years (not something just released) and start coding.

Work on your JS fundamentals - https://github.com/getify/You-Dont-Know-JS

On the backend, use google cloud or azure. There is a ton of code already written for any kind of app/website usecase you can ever imagine. Just reuse it.

Today's Mark Zuckerberg would just be plugging in piece that already exist. Focusing less on code and more on the User needs.