test2.html

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>

    var urlMajor = "http://anyorigin.com/dev/get?url=http%3A//api.steampowered.com";
    var apiKey = "9E19315419261EF7FFDE640368790BAB";

    function apiRequest(steamID) {

        var that = this;
        var deferred = $.Deferred();
        this.players = {};

        function ajax() {
            $.ajax({
                url: urlMajor + "/ISteamUser/GetPlayerSummaries/v0002/%3Fkey%3D" + apiKey + "%26steamids%3D" +  steamID + "&callback=?",
                type: 'get',
                dataType: 'jsonp',
                success: function(data) {
                    that.players = data.contents.response.players;
                    deferred.resolve(that);
                }
            });

        }

        this.getPlayers = function() {
            return this.players;
        };

        // initalise the object
        ajax();

        return deferred.promise();

    }

    var api = new apiRequest('76561198063155257');
    $.when(api).done(function(game) {
        var name = game.getPlayers();
        console.log(name);
    });
</script>