如何使用jQueryUI将拖动内容与动画交换？

这似乎很简单，但我无法让它工作。我在两个不同的下拉框里有两个拖拽框。当我将一个可拖放对象从一个可拖放对象放置到另一个可拖放对象时，现有的可拖放对象应设置动画以移动到另一个可拖放区域

$('.droppable').droppable({
    hoverClass: 'hoverClass',
    drop: function(event, ui) {
      var $from = $(ui.draggable),
          $fromParent = $from.parent(),
          $to = $(this).children(),
          $toParent = $to.parent();

      // This is where I replace draggables' positions without animation
      $toParent.html($from.css({left: '', top: '', 'z-index': ''}));
      $fromParent.html($to);
      makeDraggable();
    }
});

---

呜呼！！！我自己想出来的

演示：

刚刚为交换编写了以下小代码：

function swap($el, fromPos, toPos, duration, callback) {
    $el.css('position', 'absolute')
      .css(fromPos)
      .animate(toPos, duration, function() {
        if (callback) callback();
      });
}

$('.droppable').droppable({
    hoverClass: 'hoverClass',
    drop: function(event, ui) {
      var $from = $(ui.draggable),
          $fromParent = $from.parent(),
          $to = $(this).children(),
          $toParent = $(this);

      window.endPos = $to.offset();

      swap($from, $from.offset(), window.endPos, 200);
      swap($to, window.endPos, window.startPos, 1000, function() {
        $toParent.html($from.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        $fromParent.html($to.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        makeDraggable();
      });
    }
});

和更新的删除事件：

function swap($el, fromPos, toPos, duration, callback) {
    $el.css('position', 'absolute')
      .css(fromPos)
      .animate(toPos, duration, function() {
        if (callback) callback();
      });
}

$('.droppable').droppable({
    hoverClass: 'hoverClass',
    drop: function(event, ui) {
      var $from = $(ui.draggable),
          $fromParent = $from.parent(),
          $to = $(this).children(),
          $toParent = $(this);

      window.endPos = $to.offset();

      swap($from, $from.offset(), window.endPos, 200);
      swap($to, window.endPos, window.startPos, 1000, function() {
        $toParent.html($from.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        $fromParent.html($to.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        makeDraggable();
      });
    }
});

---

呜呼！！！我自己想出来的

演示：

刚刚为交换编写了以下小代码：

function swap($el, fromPos, toPos, duration, callback) {
    $el.css('position', 'absolute')
      .css(fromPos)
      .animate(toPos, duration, function() {
        if (callback) callback();
      });
}

$('.droppable').droppable({
    hoverClass: 'hoverClass',
    drop: function(event, ui) {
      var $from = $(ui.draggable),
          $fromParent = $from.parent(),
          $to = $(this).children(),
          $toParent = $(this);

      window.endPos = $to.offset();

      swap($from, $from.offset(), window.endPos, 200);
      swap($to, window.endPos, window.startPos, 1000, function() {
        $toParent.html($from.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        $fromParent.html($to.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        makeDraggable();
      });
    }
});

和更新的删除事件：

function swap($el, fromPos, toPos, duration, callback) {
    $el.css('position', 'absolute')
      .css(fromPos)
      .animate(toPos, duration, function() {
        if (callback) callback();
      });
}

$('.droppable').droppable({
    hoverClass: 'hoverClass',
    drop: function(event, ui) {
      var $from = $(ui.draggable),
          $fromParent = $from.parent(),
          $to = $(this).children(),
          $toParent = $(this);

      window.endPos = $to.offset();

      swap($from, $from.offset(), window.endPos, 200);
      swap($to, window.endPos, window.startPos, 1000, function() {
        $toParent.html($from.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        $fromParent.html($to.css({position: 'relative', left: '', top: '', 'z-index': ''}));
        makeDraggable();
      });
    }
});