本文實例講述了js實現帶關閉按鈕始終顯示在網頁最底部工具條的方法。分享給大家供大家參考。具體如下：
這是一款很實用的代碼，給網頁加入一個始終顯示在浏覽器窗口底部的工具欄，可以在上面放上公告，聯系人等等信息，此代碼的工具條還帶有關閉按鈕，可以隨時關閉
代碼如下:<!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>
<title>固定底（頂）部菜單</title>
<script type="text/javascript" src="js/jquery1.3.2.js"></script>
<style>
body,h1,h2,h3,h4,h5,h6,p,ul,li,dl,dt,dd{padding:0;margin:0;}
li{list-style:none;}img{border:none;}em{font-style:normal;}
a{color:#555;text-decoration:none;outline:none;blr:this.onFocus=this.blur();}
a:hover{color:#000;text-decoration:underline;}
body{font-size:12px;font-family:Arial,Verdana, Helvetica, sans-serif;word-break:break-all;word-wrap:break-word;}
.bnav{ text-align:left;height:25px;overflow:hidden;width:98%;line-height:25px;background:#fff; margin:0 1%;border:#B4B4B4 1px solid; border-bottom:none;z-index:999;position:fixed;bottom:0;left:0;_position:absolute;/* for IE6 */_top: expression(documentElement.scrollTop + documentElement.clientHeight-this.offsetHeight); /* for IE6 */ overflow:visible;}
.close{position:absolute;right:5px;height:25px;width:16px;text-indent:-9999px;padding-left:10px;}
.close a{background:url(../images/201008/close.gif) no-repeat center; width:16px;display:block;}
.bnav2{height:24px;line-height:24px; margin:1px; margin-bottom:0;background:#E5E5E5; }
.bnav .s1{ position:absolute;left:10px;}
.bnav .s1 img{ padding-top:3px;margin-right:7px;}
.bnav .s2{ position:absolute;right:30px; color:#888;}
.bnav .s2 span{ padding-right:10px;}
.bnav .s2 a{margin:0 6px;}
.rolltext{position:absolute;left:160px;height:25px;line-height:25px; overflow: hidden;}
.rolltext dt,.rolltext dd{float:left;width: auto;}
.rolltext a{display:block;height:25px;overflow:hidden;}
.bnav3{height:25px;width:16px;line-height:25px; margin:0 1%; padding-right:6px;border-bottom:none;z-index:999;position:fixed;bottom:0;right:0;_position:absolute;/* for IE6 */_top: expression(documentElement.scrollTop + documentElement.clientHeight-this.offsetHeight); /* for IE6 */ overflow:visible;}
.bnav3 a{background:url(../images/201008/open.gif) no-repeat center; display:block;height:25px;width:16px; text-indent:-5000px;}
</style>
</head>
<body>
<script type="text/javascript">
var closeBN = $.cookie("bnav");
if (closeBN == "0"){closeNav();}
function showNav(){
$(".openClose").toggle();
$.cookie("bnav", "1", {expires: 1});
}
function closeNav(){
$(".openClose").toggle();
$.cookie("bnav", "0", {expires: 1});
}
// 單行滾動
function SingleScroll(){
$(".rolltext dd").animate({marginTop:"-25px"},500,function(){
$(this).css({marginTop:"0px"}).find("a:first").appendTo(this);
});
}
$(document).ready(function(){
setInterval("SingleScroll()",3000);
});
</script>
<div class="bnav openClose">
<div class="bnav2">
<span class="s1">
<a href="#"><img src="images/201008/qqonline.gif"></a><a href="#"><img src="images/201008/qqonline2.gif"></a>
</span>
<dl class="rolltext">
<dt>特別聲明：</dt>
<dd>
<a href="#">慶雙節期間，商城有專人值班，請上帝們放心購物</a>
<a href="#">天悅所售手機為大陸行貨、全國聯保商品</a>
<a href="#">部分少量港行、歐行機器我們都已特別注明</a>
<a href="#">請上帝們就不要再咨詢同類問題啦，客服電話要爆喽</a>
</dd>
</dl>
<span class="s2">
<span><a href="#">[登錄]</a><a href="#">[免費注冊]</a></span><a href="#">購物車</a>|<a href="#">幫助中心</a>|<a href="#">在線留言</a>
</span>
<span class="close"><a href="javascript:void(0)" onclick="closeNav()" title="關閉">關閉</a></span>
</div>
</div>
<div class="bnav3 openClose" style="display:none;"><a href="javascript:void(0)" onclick="showNav()" title="打開">打開</a></div>
</body>
</html>
希望本文所述對大家的javascript程序設計有所幫助。