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JS模拟select控件的代码

2024-07-13 14:05:08   222人阅读

  • 用JavaScript模拟实现Select下拉选框功能，在本效果的实现上，背景图片起到了非常重要的美化作用，然后用CSS和JS分别对LI进行控制，最终实现漂亮的Select效果。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>石家庄渣浆泵配件</title><style> html,body{height:100%;overflow:hidden;}body,div,form,h2,ul,li{margin:0;padding:0;}ul{list-style-type:none;}body{background:#23384e;font:12px/1.5 \5fae\8f6f\96c5\9ed1;}#search,#search form,#search .box,#search .select,#search a{background:url/jscss/demoimg/201211/search.jpg) no-repeat;}#search,#search .box,#search form{height:34px;}#search{position:relative;width:350px;margin:10px auto;}#search .box{background-position:right 0;}#search form{background-repeat:repeat-x;background-position:0 -34px;margin:0 20px 0 40px;}#search .select{float:left;color:#fff;width:190px;height:22px;cursor:pointer;margin-top:4px;line-height:22px;padding-left:10px;background-position:0 -68px;}#search a{float:left;width:80px;height:24px;color:#333;letter-spacing:4px;line-height:22px;text-align:center;text-decoration:none;background-position:0 -90px;margin:4px 0 0 10px;}#search a:hover{color:#f60;background-position:-80px -90px;}#search .sub{position:absolute;top:26px;left:40px;color:#fff;width:198px;background:#2b2b2b;border:1px solid #fff;display:none;}#search .sub li{height:25px;line-height:24px;cursor:pointer;padding-left:10px;margin-bottom:-1px;border-bottom:1px dotted #fff;}#search .sub li.hover{background:#8b8b8b;}</style><script type="text/javascript"> window.onload = function (){    var oSelect = document.getElementsByTagName("span")[0];    var oSub = document.getElementsByTagName("ul")[0];    var aLi = oSub.getElementsByTagName("li");    var i = 0;        oSelect.onclick = function (event)    {        var style = oSub.style;        style.display = style.display == "block" ? "none" : "block";        //阻止事件冒泡        (event || window.event).cancelBubble = true    };        for (i = 0; i < aLi.length; i++)    {        //鼠标划过        aLi[i].onmouseover = function ()        {            this.className = "hover"        };        //鼠标离开        aLi[i].onmouseout = function ()        {            this.className = "";        };        //鼠标点击        aLi[i].onclick = function ()        {            oSelect.innerHTML = this.innerHTML            }    }        document.onclick = function ()    {        oSub.style.display = "none";        };};</script></head><body><div id="search">    <div class="box">        <form>            <span class="select">请选择游戏名称</span>                    <a href="javascript:;">搜索</a>        </form>    </div>    <ul class="sub">        <li>地下城与勇士</li>        <li>魔兽世界（国服）</li>        <li>魔兽世界（台服）</li>        <li>热血江湖</li>        <li>神鬼传奇</li>        <li>大话西游II</li>        <li>QQ幻想世界</li>    </ul></div></body></html>


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