本文实例讲述了JS使用cookie实现DIV提示框只显示一次的方法。分享给大家供大家参考，具体如下：
这里运用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。
<!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(images/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="images/close-note.gif" border="0" /></a>
</div>
</div>
</body>
</html>