Is it safe to leave a return expression without arguments in JavaScript?

Question

I am learning python at the moment and the author of the book use return expression without arguments.

Answer 1

(javascript)
if you don't expect any return value , it's safe, but be careful with long functions body, it can cause confuse.

When someone use return without arguments that means the function ends.

Quickly example:

function someFunc(data){
if(!data) return;

//Do something
}

If data doesn't exist, ends the function. As you can see, it's useful to keep the code clean and understandable, you don't need nested if(){ ... } else{ ...}