[jQuery] I need a jsonp example

[jQuery] I need a jsonp example


Hi All -
I'm fairly new to jQuery, and totally new to jsonp. I would like to
see an example of an $.ajax call using jsonp - as of right now, this
is what I have tried (based on examples found via Google searches and
the text description on the $.ajax page), but nothing fires any of the
callbacks:
One:
function test(){
    var jsonObj ={
        dataOne: "foo",
        dataTwo: "foo",
    };
    $.ajax({
        type: "GET",
        url: "https:myurl.com",
        dataType: "jsonp",
        data: jsonObj,
        error: function(){alert('bad');},
        success: function(){alert('good');},
        complete: function(){alert('foo');}
    });
}
Two:
function test(){
    var jsonObj ={
        dataOne: "foo",
        dataTwo: "foo",
    };
    $.ajax({
        type: "GET",
        url: "https:myurl.com",
        dataType: "jsonp",
        jsonp: "testCallback",
        data: jsonObj
    });
}
function testCallback(){alert('foo');}
Three:
function test(){
    var jsonObj ={
        dataOne: "foo",
        dataTwo: "foo",
    };
    $.ajax({
        type: "GET",
        url: "https:myurl.com?testCallback=?",
        dataType: "jsonp",
        data: jsonObj
    });
}
function testCallback(){alert('foo');}
Four:
function test(){
    var jsonObj ={
        dataOne: "foo",
        dataTwo: "foo",
    };
    $.ajax({
        type: "GET",
        url: "https:myurl.com?callback=testCallback",
        dataType: "jsonp",
        data: jsonObj
    });
}
function testCallback(){alert('foo');}
Any help would be much appreciated! Thanks!!!