Why wouldn't this code work?

Question

function main() {
var eventExample = readLine();
// function call
setReminder(eventExample)
}
//complete the function
function setReminder(a) {
var b = "You set a reminder about ";
return a + b

};

main();

Answer 1

I made it work wtih:

console.log (b+a) instead of the return statement...

and deleted main(); from the bottom....

But... why doesn't work the other day?

Answer 2

return just returns a value to call statement. You need to catch it to use like :
console.log( setReminder(eventExample)) ;

Answer 3

But wouldnt the return be called from the main() function?

Answer 4

main() function calling the setReminder () function which returns a value to call statement in main() function. You can use it according to your requirement.. Like print, store, ....