How to pass a function as an argument in Javascript?

Question

I'm looking to pass an anonymous function to another function, but it doesn't seem to be working as I'd like.

I've attached the code, I think it'd give you a better idea what I'd to do.

<script language="javascript" type="text/javascript">
function do_work(success) {
    success;
}

do_work(function () {
    alert("hello")
});

</script>

Thanks in advance for any help.

Answer 1

You have to actually call the function:

function do_work(success) {
    success();
}

Answer 2

The variable success is an "instance" of Function, so you can also call apply(), that will allow you to redefine the scope :

function do_work(success) {
    var foo = {
       bar : "bat"          
    }
    success.apply(foo);
}

do_work(function () {
 alert(this.bar)
});