script>//specify message to alert
var alertmessage="Welcome to knowsky.com \n 这个提示信息只会出现一次哟!"///No editing required beyond here///////Alert only once per browser session (0=no, 1=yes)
var once_per_session=1
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { // if cookie exists
offset += search.length
// set index of beginning of value
end = document.cookie.indexOf(";", offset);
// set index of end of cookie value
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}function alertornot(){
if (get_cookie('alerted')==''){
loadalert()
document.cookie="alerted=yes"
}
}function loadalert(){
alert(alertmessage)
}if (once_per_session==0)
loadalert()
else
alertornot()</script>-
var alertmessage="Welcome to knowsky.com \n 这个提示信息只会出现一次哟!"///No editing required beyond here///////Alert only once per browser session (0=no, 1=yes)
var once_per_session=1
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { // if cookie exists
offset += search.length
// set index of beginning of value
end = document.cookie.indexOf(";", offset);
// set index of end of cookie value
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}function alertornot(){
if (get_cookie('alerted')==''){
loadalert()
document.cookie="alerted=yes"
}
}function loadalert(){
alert(alertmessage)
}if (once_per_session==0)
loadalert()
else
alertornot()</script>-
// 调用对话框
function helpor_net(){
if (get_cookie('popped')==''){
openpopup()
document.cookie="popped=yes"
}
}
helpor_net() ;function openpopup(){
url="hahah11.html";
window.open("hahah11.html","gonggao","width=260,height=212,left=200,top=0");
} // 获得 cookie
function get_cookie(Name) { var search = Name + "=" var returnvalue = ""; if (document.cookie.length > 0) { offset = document.cookie.indexOf(search) if (offset != -1) { // if cookie exists offset += search.length end = document.cookie.indexOf(";", offset); if (end == -1) end = document.cookie.length; returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}
用这段代码就可以做到只要是第一次登录到该页面上就会弹出窗口,再次刷新的话则不会弹出窗口。 楼主:
“我希望的是弹过一次后,只要不删除cookies,就永远都不会弹了. ” 如果是这样的话,楼主要在 IE 浏览器里设置一下 COOKIE 操作,每次关闭浏览器的时候不删除 cookie 就可以了。
浏览器的默认设置应该是不会关闭浏览器就删除所有cookie的吧,那我登录过一次CSDN第二天不用登录也能上。
http://blog.csdn.net/avon520/archive/2008/10/07/3029375.aspx
如果关闭浏览器后没有删除 cookie 的话,那上面通过 cookie 的判断应该可以正确判断是否弹出窗口啊,上面的意思代码的意思,就是只弹出窗口一次啊。只要不删除 cookie 的话,就永远不会弹出来了啊。 楼主,你是这个意思吗?
你把 alert(document.cookie) 看看关闭浏览器后弹出来的 cookie 值还有没有,如果没有的话,那就是你的浏览器在哪里设置了“关闭浏览器清除临时文件” 这个设置了。
好像是这样写哦 offset = offset + search.length + 1;这样才对吧
保存cookie,你这样试试
cookie_name:cookie名字,value:cookie值,expireDays:时间(单位:天)
function setCookie(cookie_name,value,expireDays)
{
var exDate = new Date();
exDate.setDate(expireDays);
document.cookie = cookie_name + "=" + escape(value) + ((expireDays==null) ? "" : ";expirDays=" + exDate);
}
<!--
function openpopup(){
url="hahah11.html"
window.open("hahah11.html","gonggao","width=260,height=212,left=200,top=0")
} //注意,这里是弹出窗口的相关属性。分别为: 网址 标题 窗口宽度 窗口高度 窗口左边距 窗口上边距
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
} function helpor_net(){ alert(get_cookie('popped'))
if (get_cookie('popped')==''){
document.cookie="popped=yes;"
openpopup()
}
}
helpor_net()
//-->
</SCRIPT>