Why create a common.js file?

Question

JavaScript

Why create a common.js file? Googled it but it's not entirely clear. Is this a file for your scripts? Or is it possible to throw ready-made scripts here? Is this file for not throwing js code into index.html?

Answer 1

you can name the file for your scripts whatever you want
, just someone calls such a file script, someone scripts, someone template, someone common, and someone else will come up with something more rare

Answer 2

Translate the word common. Perhaps the logic by which it is called so will become clear.

Answer 3

I like to call engine.js )