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。
运行效果截图如下：
在线演示地址如下：
具体代码如下：
<!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> <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 = "https://www.jb51.net/"; 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> <div><a href="#"><img src="https://www.jb51.net/images/close-note.gif" /></a></div> </div> </body> </html>