>[success] # 一個函數處理多個事件 ~~~ 1.當一個節點有多個觸發方法時候，可以考慮封裝 成函數，利用'event.type' 需要被觸發的事件 ~~~ ~~~ <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> ~~~