I don't understand the return statement for js

JavaScript
1

Lesson “Return a Value From a Function With Return,” says “You can use a return statement to send a value back out of a function.” Yet I can’t figure out what that is supposed to mean. Could someone explain it in more detail for me?

1 Like
3

Thanks for taking the time to explain this to me!

4

Also the return statement is used in some cases to stop the code executing further. For example in node js(server side javascript in case you don t know)
if for some reason you encounter an error you can return back a response to prevent the code going further and trying to send 2 responses for example which would crash your app. Also inside a function the code you write after return it won t be executed. You can also return another function that returns a value and you can grab that value.

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5

This is more explicit in some other languages. Take this C/C++ code, for instance:

void hello(){
  printf("Hello World");
}
bool test(){
  return true;
}
int main(){
  if(test){
    hello();
  } 
  return 0;
}

Here, we have three functions. main() returns an integer, test() returns a boolean value, and hello() is void and just prints “Hello World” without returning anything.

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6

could you pleas give me an example When exactly we don’t use Return statement?