Question

So let’s say I’m calling a function like so:

some_function('pages',{attr1: 1, attr2: 2},function(){
    alert('the function is ready!');
}

Now how do I set up the “some_function()” function in order to return to the caller that it is ready and make the alert go off?

Thanks 🙂

Answer 1

I think you mean callbacks.
Maybe something like this:

function some_function(param1, param2, callback) {

    // normal code here...

    if ( typeof callback === 'function' ) { // make sure it is a function or it will throw an error
        callback();
    }
}

Usage:

some_function("hi", "hello", function () {
    alert("Done!");
}); 
/* This will do whatever your function needs to do and then,
when it is finished, alert "Done!" */

---

Note: Put your return after the if clause.