<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"/> <title>js实现每个IP每天只弹出一次广告页</title> </head> <body> <script type="text/javascript"> //定义Cookie function setCookie(name, value, expire) { window.document.cookie = name + "=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString())); } function getCookie(Name) { var search = Name + "="; if (window.document.cookie.length > 0) { // 如果没有则下一个 offset = window.document.cookie.indexOf(search); if (offset != -1) { // 如果找到 offset += search.length; // 设置开始 end = window.document.cookie.indexOf(";", offset) // 结束 if (end == -1) end = window.document.cookie.length; return unescape(window.document.cookie.substring(offset, end)); } } return null; } function register(name) { var today = new Date(); var expires = new Date(); expires.setTime(today.getTime() + 1000 * 60 * 60 * 24); setCookie("ItDoor", name, expires); } var exitURL = "http://www.sohu.com/"; function openWin() { var c = getCookie("ItDoor"); if (c != null) { return; } register(); // var featureStr = "''"; // featureStr = "'top=0,left=0,width=200,height=100,toolbar=yes, menubar=no, scrollbars=no, resizable=no, location=no, status=no,center:no'"; // self.focus(); // var ExitWindow = window.open(exitURL, '', featureStr); // ExitWindow.focus(); //以对话框形式,强制操作 var obj = new Object(); var sDialogUrl = "http://google.com.hk"; var sFeatures = 'resizable: yes; status: no; scroll: no; help: no; center: yes; dialogWidth : 200px; dialogHeight : 100px; zoominherit : 1'; var returnValue; returnValue = window.showModalDialog(sDialogUrl, obj, sFeatures); } openWin(); window.focus() </script> 刷新页面不会再弹出 <input /> </body> </html>
说明:js放在body里确保打开时自动弹出,确保弹出广告前其它操作不可见。