1、LOADING页读取Cookie，判断是否第一次打开首页，如果是就跳转到过渡页，过渡页动画后跳转到首页并写入COOKIE，如果不是就直接打开首页。
2、点击“清除Cookie”按钮清除Cookie。
首页代码:
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<script language="javascript" type="text/javascript"> //首页 findCookie("visited") //判断Cookie function findCookie(sName) { if (getCookie(sName) != null) window.location.href = "首页地址"; else window.location.href = "过渡页地址"; } //获取Cookie function getCookie(sName) { var aCookie = document.cookie.split("; "); for (var j=0; j < aCookie.length; j++){ var aCrumb = aCookie[j].split("="); if (escape(sName) == aCrumb[0]&& aCrumb[1]=="true") return true; } return null; } </script> |
过渡页代码：
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<script language="javascript" type="text/javascript"> //过渡页 setCookie("visited","true",24)//设置过期时间24小时 //setCookie("visited","true")//不设置过期时间 //设置Cookie function setCookie(sName,sValue,expireHours) { var cookieString = sName + "=" + escape(sValue); if (expireHours>0) {//设置过期时间 var date = new Date(); date.setTime(date.getTime + expireHours * 3600 * 1000);//时间单位=毫秒 cookieString = cookieString + "; expire=" + date.toGMTString();//date.toGMTString()转为GMT时间 } document.cookie = cookieString;//写cookie } </script> <input type="button" value="清除Cookie" onclick="clearCookie('visited')"> <script language="javascript" type="text/javascript"> //清除Cookie function clearCookie(sName){ var date=new Date(); //将Date设置为过去的时间 date.setTime(date.getTime()-10000); //将这个Cookie删除 document.cookie=sName+"=''; expire="+date.toGMTString();//写cookie } </script> |