检测鼠标何时离开视口顶部？

Question

我想检测鼠标何时离开视口顶部（向北可以这么说）。我在网上搜索了How can I detect when the mouse leaves the window?。是一个好的开始，但它也可以检测鼠标何时离开其他方向。我怎么才能检测出顶部的出口？

谢谢！

Answer 1

使用此插件：https://github.com/carlsednaoui/ouibounce

当鼠标移出顶部视口时会触发事件。

Answer 2

为了检测mouseleave而不考虑滚动条和自动完成字段：

document.addEventListener("mouseleave", function(event){

  if(event.clientY <= 0 || event.clientX <= 0 || (event.clientX >= window.innerWidth || event.clientY >= window.innerHeight))
  {

     console.log("I'm out");

  }
});

然后你只需要删除条件：

event.clientY <= 0  is when the mouse leave from the top
event.clientX <= 0  is when the mouse leave from the left
event.clientX >= window.innerWidth is when the mouse leave from the right
event.clientY >= window.innerHeight is when the mouse leave from the bottom