<style>
.line_hover1{position:absolute;width: 80px;height:5px;background-color:yellow;}
#ul1 li{float:left;display: block;margin:0 20px 0 0;}
</style>
<body>
<ul id="ul1">
<li><div class ="line_hover1"></div></li>
<li><div class ="line_hover1"></div></li>
<li><div class ="line_hover1"></div></li>
<li><div class ="line_hover1"></div></li>
</ul>
<script>
window.onload = function(){
var oUl = document.getElementById("ul1");
var oLi = oUl.getElementsByTagName("li");
oLi[1].style.display = "none";//这一步实现不了
};
</script>
</body>
附上代码,各位大神可以直接黏贴运行看看,没加absolute可以获取,加了就不行了!谢谢各位!