Switch case jumps to wrong case in javascript (how to properly use the break command)

Question

My code is not so long so I am pasting all of it here.

The code is not complete but when I run it it first jumps to case \"start\" which it is supposed to, and then

Answer 1

The code will start running at the first matching "case", but it only stops running when it has reached a "break" or "return" statement;