利用cookie技术让DIV提示框只显示一次的代码

运用JavaScript的cookie技术,控制网页上的提示DIV只显示一次,也就是当用户是第一次打开网页的时候才显示,第二次自动隐藏起来,很好的提升了用户体验,不会使用户烦感;利用Cookies,我们还可做超多的事情,慢慢体会吧。

(当用户点击关闭时,顺便注册cookie信息,下次打开或刷新时,读取cookie是否存在,如果不存在继续弹出层,反之,不弹出。)

<!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=gb2312" />
<title>cookie,只显示一次的DIV提示框</title>
<style>
.note{height:100px;width:600px;background:url(/jscss/demoimg/201010/tishi.jpg) #FEFFCF 40px 0px no-repeat;border:#EDCE7B 1px solid;}
.guanbi{float:right;font-size:12px;padding:6px;}
</style>
<script>
function cookiesave(n, v, mins, dn, path)
{
    if(n)
    {
        
        if(!mins) mins = 365 * 24 * 60;
        if(!path) path = "/";
        var date = new Date();
        
        date.setTime(date.getTime() + (mins * 60 * 1000));
        
        var expires = "; expires=" + date.toGMTString();
        
        if(dn) dn = "domain=" + dn + "; ";
        document.cookie = n + "=" + v + expires + "; " + dn + "path=" + path;
    }
}
function cookieget(n)
{
    var name = n + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i<ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
    }
    return "";
}
function closeclick(){
    document.getElementById('note').style.display='none';
    cookiesave('closeclick','closeclick','','','');
}
function clickclose(){
    if(cookieget('closeclick')=='closeclick'){
        document.getElementById('note').style.display='none';
    }else{
        document.getElementById('note').style.display='block';
    }
}
window.onload=clickclose;
</script>
</head>
<body>
<div id="note" class="note" style="display:none;">
    <div><a href="#" onclick="closeclick()" class="guanbi"><img src="/jscss/demoimg/201010/close-note.gif" border="0" /></a></div>
</div>
</body>
</html>

 

 

原文链接:http://www.codefans.net/jscss/code/2147.shtml

posted @ 2015-11-17 19:04  半前端半设计的四不像  阅读(368)  评论(0)    收藏  举报