两种方法使用js读写cookie实现一个底部广告浮层效果

来源：互联网发布：菲律宾网络博客编辑：程序博客网时间：2024/05/29 06:44
下面一个案例实现了js实现一个页面浮层并且使用两种方法使用js读写cookie；来实现用户关闭广告的显示状态；
读者可以将下面代码复制到一个html文件试试效果；html的pre标签未两种js实现的方式
<!DOCTYPE HTML><html>  <head>    <meta content="text/html;charset=utf-8" http-equiv="Content-Type"/>    <meta content="杨凯" name="description"/>    <meta name="author" content="http://blog.csdn.net/tianyazaiheruan"/>    <meta name="copyright" content="杨凯版权所有"/>    <title>IT_Blog_杨凯</title>   </head>  <body><div>     本文作者：IT_Blog_杨凯     转载请指明出处：<a href=”http://blog.csdn.net/yangkai_hudong”>http://blog.csdn.net/yangkai_hudong</a></div><br><div><pre>1.第一种：使用jQuery的cookie库   例子就是现在正在使用的js,相关代码如下：     $(document).ready(function () {var adCookie=$.cookie("docCookie");//如果本地没有cookie，将词条cookie写入本地if(adCookie!="adDocCookie"){$("#wapDocCookie").show();}//如果本地存在词条cookie，不显示浮层if(adCookie=="adDocCookie"){$("#wapDocCookie").hide();}//关闭广告，隐藏浮层$("#closeAd").click(function(){   $("#wapDocCookie").hide();  $.cookie("docCookie","adDocCookie",{expires:60});});}); //jQuery cookie libraryjQuery.cookie = function(name, value, options) {if (typeof value != 'undefined') { // name and value given, set cookieoptions = options || {};if (value === null) {value = '';options.expires = -1;}var expires = '';if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {var date;if (typeof options.expires == 'number') {date = new Date();date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));} else {date = options.expires;}expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE}var path = options.path ? '; path=' + (options.path) : '';var domain = options.domain ? '; domain=' + (options.domain) : '';var secure = options.secure ? '; secure' : '';document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');} else { // only name given, get cookievar cookieValue = null;if (document.cookie && document.cookie != '') {var cookies = document.cookie.split(';');for (var i = 0; i < cookies.length; i++) {var cookie = jQuery.trim(cookies[i]);// Does this cookie string begin with the name we want?if (cookie.substring(0, name.length + 1) == (name + '=')) {cookieValue = decodeURIComponent(cookie.substring(name.length + 1));break;}}}return cookieValue;}};2.第二种：自己写一个js操作cookie的实例   相关js如下：   $(document).ready(function() {function writeCookie(name,value){ var exp = new Date(); exp.setTime(exp.getTime() + 7*24*60*60*1000); document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();}//读取cookiesfunction readCookie(name){ var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)"); if(arr=document.cookie.match(reg)){  return unescape(arr[2]); }else {  return null;  }}   var adCookie = readCookie("adCookie");  if(adCookie!="adDocCookie"){$("#wapDocCookie").show();}//如果本地存在词条cookie，不显示浮层  if(adCookie=="adDocCookie"){$("#wapDocCookie").hide();  }   //关闭广告，隐藏浮层$("#closeAd").click(function(){   $("#wapDocCookie").hide();});});</pre></div><!--广告样式 --><style type="text/css">body {TEXT-ALIGN: center;}#wapDocCookie{background-color:rgba(0,0,0,0.7);background:#4b4b4b\9;width:100%;text-align:center;position:fixed;padding:10px 0 5px 0;bottom:0;left:0;}#bkguancha{background:url(http://static.hudong.com/35/86/26100000006141138683868789461.png) no-repeat;background-size:280px;background:url(http://static.hudong.com/50/69/26100000006141138683695381873.png)  no-repeat 0 -36px\9;height:46px;width:290px;display:inline-block;overflow:hidden;line-height:99em;}#closeAd{background:url(http://static.hudong.com/54/88/26100000006141138683883031718.png) no-repeat ;background-size:12px;background:url(http://static.hudong.com/50/69/26100000006141138683695381873.png)  no-repeat -278px 0\9;height:12px;width:12px;display:block;position:absolute;top:5px;right:10px;}<!--广告js --></style><script type="text/javascript" src="http://www.huimg.cn/lib/jquery-1.3.2.js"></script><script type="text/javascript">$(document).ready(function () {var adCookie=$.cookie("docCookie");//如果本地没有cookie，将词条cookie写入本地if(adCookie!="adDocCookie"){$("#wapDocCookie").show();}//如果本地存在词条cookie，不显示浮层if(adCookie=="adDocCookie"){$("#wapDocCookie").hide();}//关闭广告，隐藏浮层$("#closeAd").click(function(){   $("#wapDocCookie").hide();      $.cookie("docCookie","adDocCookie",{expires:60});});}); //jQuery cookie libraryjQuery.cookie = function(name, value, options) {    if (typeof value != 'undefined') { // name and value given, set cookie        options = options || {};        if (value === null) {            value = '';            options.expires = -1;        }        var expires = '';        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {            var date;            if (typeof options.expires == 'number') {                date = new Date();                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));            } else {                date = options.expires;            }            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE        }        var path = options.path ? '; path=' + (options.path) : '';        var domain = options.domain ? '; domain=' + (options.domain) : '';        var secure = options.secure ? '; secure' : '';        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');    } else { // only name given, get cookie        var cookieValue = null;        if (document.cookie && document.cookie != '') {            var cookies = document.cookie.split(';');            for (var i = 0; i < cookies.length; i++) {                var cookie = jQuery.trim(cookies[i]);                // Does this cookie string begin with the name we want?                if (cookie.substring(0, name.length + 1) == (name + '=')) {                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));                    break;                }            }        }        return cookieValue;    }};</script><div  id="wapDocCookie" style="display: none;">      <a  id="bkguancha" href="http://www.baike.com/api.php?m=guancha&a=download" onclick="StatVirtualTraffic(document.referrer,window.location,'stat_hdstat_onclick_survey_wap_doc_foot_download')">点击下载</a>      <a title="关闭"  id="closeAd" href="javascript:void(0)"> </a></div></body></html>
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