Run callback with all arguments

Question

How can I run a callback function with all of its arguments when I don't know how many arguments are supplied.

Take the following example:

function tryMe (param1, param2) {
    alert(param1 + " and " + param2);
}

function callbackTester (callback) {
    callback (arguments[1], arguments[2]);
}

callbackTester (tryMe, "hello", "goodbye");

callbackTester (tryMe, "hello", "goodbye", "seeYouLater");

How can I run the callback from the callbackTester() function so that it will automatically call all of its arguments?

Fiddle : http://jsfiddle.net/qj1rs29q/

Answer 1

This one should suit your needs:

function callbackTester() {
    var args = Array.prototype.slice.call(arguments),
        callback = args.shift();
    callback.apply(this, args);
}

Fiddle