How to make a return to an external function in JS?

Question

Mozilla

Good evening.
I get a callback function and I need to display the result in the storage() function.

function storage(name) {
// ...
    self.port.on("localeEmit", function(title) {
        return title;
    });
// ...
}

storage("title");

UPD: None

Answer 1

function storage(name, callback) {
// ...
    self.port.on("localeEmit", function(title) {
        callback(title);
    });
// ...
}

storage("title", function(title) {
  //...
});

Answer 2

So?

Answer 3

Alternatively, use Deferred/Promise .