Promise returning undefined

Question

I am trying to use promise to send an ajax request to a php script which checks if a file exist on the server and returns a boolean value.

I have the below code but

Answer 1

This part of your code:

promise.then(function(e) {
    return e;
});

only returns e to the callback function. You have to handle the result within that callback.

promise.then(function() {
    // handle result;
});

Or might as well return the promise as shown by @Ole.