I am currently trying to learn javascript. Coming from a python/R background I find it really useful for learning purposes to be able to write code in a script in Rstudio/pyCharm which I can then execute in a interpreter by highlighting specific lines of code and then pressing a ctrl+enter or some other keyboard shortcut.
The console available on firefox/chrome seems incredibly rich and useful for learning / testing specific pieces of code but I find it quite limiting that I can't store each line in a script with comments/notes to myself.
Is there a way to run lines of javascript in firefox/chrome like pycharm & rstudio can with their respective interpreters or how is it usually recommend for people to learn the language in an efficient manner ?