复制代码 代码如下:
<script language="javascript"> <br>function change(){ <br>//通过父元素li，找到兄弟元素ul <br>var oSecondDiv = this.parentNode.getElementsByTagName("ul")[0]; <br>//CSS交替更换来实现显、隐 <br>if(oSecondDiv.className == "myHide") <br>oSecondDiv.className = "myShow"; <br>else <br>oSecondDiv.className = "myHide"; <br>} <br>window.onload = function(){ <br>var oUl = document.getElementById("listUL"); <br>var aLi = oUl.childNodes;//子元素 <br>var oA; <br>for(var i=0;i<aLi.length;i++){ <br>//如果子元素为li，且这个li有子菜单ul <br>if(aLi[i].tagName == "LI" && aLi[i].getElementsByTagName("ul").length){ <br>oA = aLi[i].firstChild;//找到超链接 <br>oA.onclick = change;//动态添加点击函数 <br>} <br>} <br>} <br></script>
