导航条

用JavaScript和jQuery写了一个带下拉框的导航栏，后面会慢慢加上新的样式。

样式：

HTML：

<div id="topnav"> 
    <ul class="logo"><li><a href="javascript:void(0)">logo</a></li></ul>
    <ul class="cnav"> <li><a href="javascript:void(0)">首页</a></li> 
      <li id="navfind"><a href="javascript:void(0)">发现</a> <div class="navbox"><ul><li>平面</li><li> UI </li><li>网页 </li><li>插画</li></ul>  <ul><li>平面</li><li> UI </li><li>网页 </li><li>插画</li></ul></div> </li> 
      <li><a href="javascript:void(0)">同城</a></li> <li><a href="javascript:void(0)">课程</a></li> <li><a href="javascript:void(0)">活动</a></li> <li class="omit"><a href="javascript:void(0)">···</a></li>  <li><a href="javascript:void(0)">查找</a></li> </ul>
    <ul class="rnav"><li class="login"><span><a href="javascript:void(0)">登录</a></span> | <span><a href="javascript:void(0)">注册</a></span></li></ul> 
</div>

 

JavaScript：

/*javascript*/
    //鼠标移入
    document.getElementById("navfind").addEventListener("mouseover",function(){
        document.getElementById("navfind").getElementsByClassName("navbox")[0].style.display="block";
    });
    //鼠标移出
    document.getElementById("navfind").addEventListener("mouseout",function(){
        document.getElementById("navfind").getElementsByClassName("navbox")[0].style.display="none";
    });

 

jQuery：

/*jquery*/
    $(document).ready(function() {
        //鼠标移入
        $("#navfind").mouseover(function(){
            $("#navfind div").css("display","block");
        });
        //鼠标移出
         $("#navfind").mouseout(function(){
            $("#navfind div").css("display","none");
        });
    });