前端 keydown 和 keyup 返回的事件对象属性不一致？-灵析社区

可以参考如下链接 * [https://stackoverflow.com/questions/11030532/keypress-and-keyup-why-is-the-keycode-different](https://link.segmentfault.com/?enc=i%2BY6eoOcO8btbn1VrSh1wQ%3D%3D.DHGmLzmB%2B%2F9su8Abwzm0IIY0HUxfoLV9AGwKPaKXa%2BAMUIbqgb8qTpIYXKc30hZdaVq7mBV%2BXpKS2dQwaHzVCpLGErlgmkYwYX%2B4RoRs6Tfu6fB7ntw26bqvwroI3tYd) * [https://unixpapa.com/js/key.html](https://link.segmentfault.com/?enc=MpcuvIzWV1kygUqazDRQiQ%3D%3D.sdvJ1YeG3ysIORhFPn1ZA5yjP9S4t8jwlXQGaSqv0DJQUACMyjn4jvZ1zHXAc7xV)