Can someone please clarify prototype in javascript?

Answer 1

Prototypes are a way to add functions to a class, for example an "addHours" to the Date class

Look at the example to see it in action:
https://code.sololearn.com/W66XL2Ks9QjN/?ref=app

Answer 2

FA_develops In custom classes, Is this equivalent to simply declaring methods in the class?