js实例4下拉菜单
<style type="text/css">
*{ margin:0px auto; padding:0px}
#fenlei{ width:500px; height:35px;}
.xiang{ float:left; width:100px; height:35px; text-align:center; line-height:35px; vertical-align:middle;}
.xiang:hover{ cursor:pointer}
.xuanxiang{ width:500px; height:300px; display:none}
#guonei{ background-color:#63C; display:block}
#guoji{ background-color:#3C9}
#tiyu{ background-color:#C36}
#yule{ background-color:#FF6}
</style>
</head>
<body>
<br />
<div id="fenlei">
<div class="xiang" style="background-color:#63C" onclick="showa('guonei')">国内新闻</div>
<div class="xiang" style="background-color:#3C9" onclick="showa('guoji')">国际新闻</div>
<div class="xiang" style="background-color:#C36" onclick="showa('tiyu')">体育新闻</div>
<div class="xiang" style="background-color:#FF6" onclick="showa('yule')">娱乐新闻</div>
</div>
<div id="guonei" class="xuanxiang">
</div>
<div id="guoji" class="xuanxiang">
</div>
<div id="tiyu" class="xuanxiang">
</div>
<div id="yule" class="xuanxiang">
</div>
<script type="text/javascript">
function showa(d)
{
var div = document.getElementById(d);
var suoyou = document.getElementsByClassName("xuanxiang");
for(var i=0;i<suoyou.length;i++)
{
suoyou[i].style.display = "none";
}
div.style.display = "block";
}
</script>
<style type="text/css">
*{ margin:0px auto; padding:0px}
#fenlei{ width:500px; height:35px;}
.xiang{ float:left; width:100px; height:35px; text-align:center; line-height:35px; vertical-align:middle;}
.xiang:hover{ cursor:pointer}
.xuanxiang{ width:500px; height:300px; display:none}
#guonei{ background-color:#63C; display:block}
#guoji{ background-color:#3C9}
#tiyu{ background-color:#C36}
#yule{ background-color:#FF6}
</style>
</head>
<body>
<br />
<div id="fenlei">
<div class="xiang" style="background-color:#63C" onclick="showa('guonei')">国内新闻</div>
<div class="xiang" style="background-color:#3C9" onclick="showa('guoji')">国际新闻</div>
<div class="xiang" style="background-color:#C36" onclick="showa('tiyu')">体育新闻</div>
<div class="xiang" style="background-color:#FF6" onclick="showa('yule')">娱乐新闻</div>
</div>
<div id="guonei" class="xuanxiang">
</div>
<div id="guoji" class="xuanxiang">
</div>
<div id="tiyu" class="xuanxiang">
</div>
<div id="yule" class="xuanxiang">
</div>
<script type="text/javascript">
function showa(d)
{
var div = document.getElementById(d);
var suoyou = document.getElementsByClassName("xuanxiang");
for(var i=0;i<suoyou.length;i++)
{
suoyou[i].style.display = "none";
}
div.style.display = "block";
}
</script>
