javascript when to return a function code example

Example 1: return statement javascript

function test(arg){
    return arg;
}

Example 2: javascript return

Babel compiles "javascript return" (depending on quantum airspeed) into either:
"The return of the Javascript" Javascript dialect spoken on Java, or 
the second sequel in the zombie series inwhich 
Javas's crypt on Tatooine, spawns millions of ravenous 
enterprise applications that supress the rebellion's ability to use Node.

Example 3: return statement in javascript

// --- The following return statements all break the function execution: ---

return;
return true;
return false;
return x;
return x + y / 3;