Why is arguments.callee.caller.name undefined?

Question

How come this doesn\'t alert \"http://127.0.0.1/sendRequest\"? (Available at http://jsfiddle.net/Gq8Wd/52/)

var foo = {
    sendRequest: function() {
        ale         


        

Answer 1

Because the function that is calling the function being called is an anonymous function (and hence, has no name).

Try:

function sendRequest() {
    alert(bar.getUrl());
}

var foo = {
    sendRequest: sendRequest
};                    

var bar = {
    getUrl: function() {
        return 'http://127.0.0.1/' + arguments.callee.caller.name;
    }
};

foo.sendRequest();