Is Break necessary in switch case JavaScript?

The return statement ends function execution and specifies a value to be returned to the function caller .

The JavaScript switch statement can contain return statements if it is present inside a function . The function will return the value in the switch statement and the code after the switch statement will not be executed.17 Tem 2020

It’s idiomatic to return from case statements, and it’s “unreachable code” noise otherwise. Personally I would remove the returns and keep the breaks. I would use the switch statement to assign a value to a variable. Then return that variable after the switch statement.

The break Keyword It is not necessary to break the last case in a switch block . The block breaks (ends) there anyway. Note: If you omit the break statement, the next case will be executed even if the evaluation does not match the case.