Javascript 拖放后将访问者发送到新页面

我想在访问者将三枚硬币拖进三个不同的罐子后，让他们进入一个新页面，但我不确定在他们将硬币拖进罐子后如何触发新页面。 我希望这样的事情能奏效：

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非常感谢。这是为博物馆的儿童展览准备的，所以孩子们会非常感激的。不用担心！我很高兴能帮上忙：）谢谢！这是为博物馆的儿童展览准备的，所以孩子们会非常感激的。不用担心！我很高兴我能帮忙：）

$(init);
function init() {
    $('#makeMeDraggable1').draggable();
    $('#makeMeDroppable1').droppable({
        drop: function () {
            $("#makeMeDraggable1").draggable("option", "containment", "#makeMeDroppable1");
        }
    });
    $('#makeMeDraggable2').draggable();
    $('#makeMeDroppable2').droppable({
        drop: function () {
            $("#makeMeDraggable2").draggable("option", "containment", "#makeMeDroppable2");
        }
    });
    $('#makeMeDraggable3').draggable();
    $('#makeMeDroppable3').droppable({
        drop: function () {
            $("#makeMeDraggable3").draggable("option", "containment", "#makeMeDroppable3");
        }
    });
}

$(init);

function init () {
    var drops = 0,
        redirectIfDone = function () {
            if (drops === 3) {
                window.location = 'http://www.google.com';
            }
        };

    $('#makeMeDraggable1').draggable();
    $('#makeMeDroppable1').droppable({
        drop: function () {
            drops++;
            redirectIfDone();
            $("#makeMeDraggable1").draggable("option", "containment", "#makeMeDroppable1");
        }
    });
    $('#makeMeDraggable2').draggable();
    $('#makeMeDroppable2').droppable({
        drop: function () {
            drops++;
            redirectIfDone();
            $("#makeMeDraggable2").draggable("option", "containment", "#makeMeDroppable2");
        }
    });
    $('#makeMeDraggable3').draggable();
    $('#makeMeDroppable3').droppable({
        drop: function () {
            drops++;
            redirectIfDone();
            $("#makeMeDraggable3").draggable("option", "containment", "#makeMeDroppable3");
        }
    });
}