I want to test a code for a messaging web app, and it is written both in css, js, and php. How would I compile all at once?

Question

Web app

Answer 1

I think you can try JSFiddle.
https://jsfiddle.net/
Nah nevermind. No php, only html.

Answer 2

What do you mean by compiling? Normally these languages are used for web apps, you should use them as they are for example with an HTML part or an entire framework like Django (written in Python).