js实例4下拉菜单

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js实例4下拉菜单

<style type="text/css">
*{ margin:0px auto; padding:0px}
#fenlei{ 500px; height:35px;}
.xiang{ float:left; 100px; height:35px; text-align:center; line-height:35px; vertical-align:middle;}
.xiang:hover{ cursor:pointer}
.xuanxiang{ 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{ 500px; height:35px;}
.xiang{ float:left; 100px; height:35px; text-align:center; line-height:35px; vertical-align:middle;}
.xiang:hover{ cursor:pointer}
.xuanxiang{ 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>

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原文地址：https://www.cnblogs.com/qdlj/p/6188309.html