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显然(至少在 Firefox 中)当鼠标按下时,无法刷新事件处理程序。我正在尝试编写一些拖放代码,当元素被拖动时,我希望能够使用 mouseover 事件处理程序来判断它正在“触摸”哪个元素,但这不起作用。有没有办法启用此功能或解决方法?