>[success] # 一个函数处理多个事件 ~~~ 1.当一个节点有多个触发方法时候，可以考虑封装 成函数，利用'event.type' 需要被触发的事件 ~~~ ~~~ <script type="text/javascript"> var btnNode = document.getElementsByTagName("input").item(0); var handler = function(event) { switch (event.type) { case "click": alert("clicked"); break; case "mouseover": event.currentTarget.style.backgroundColor = "red"; break; case "mouseout": event.currentTarget.style.backgroundColor = ""; break; } }; btnNode.onclick = handler; btnNode.onmouseover = handler; btnNode.onmouseout = handler; }; </script> ~~~