You want the tooltip to appear near the cursor when the timeout event occurs in Pause state, but browsers do not pass the cursor position to timer events.

当在Pause状态下出现timeout事件时，希望工具提示出现在鼠标光标附近，但是浏览器没有将鼠标位置传递给计时器事件。

youdao

They create a trivial timer event object that contains only an event type -- either timeout or timetick -- and pass it to the same handleEvent method that handles cursor events.

它们仅仅创建一个简单的计时器事件对象，其中只包含一种事件类型 —— timeout 或者 timetick，并将它传递给处理鼠标事件的同一个 handleEvent 方法。

youdao