javascript 设置cookie然后重定向
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Set cookie then redirect
提问by user3040048
The cookie is not holding and the domain example.com cannot redirect to a.example.com when I type on the address bar. Any help will be very much appreciated.
当我在地址栏上输入时，cookie 没有保存并且域 example.com 无法重定向到 a.example.com。任何帮助将不胜感激。
$(function(){
var city = getCookie('city');
if(city !=null && city !=''){
window.location.href = 'http://' + city + '.example.com';
}
$('#citygo').change(function(){
var city = $(this).val();
window.location.href = 'http://' + city + '.example.com';
});
});
<select id="citygo">
<option value="0">Select City</option>
<option value="amsterdam">Amsterdam</option>
<option value="newyork">New York</option>
<option value="london">London</option>
<option value="cardiff">Cardiff</option>
</select>
Is it like this? It is not working. Here is the code:
是这样吗？它不工作。这是代码：
<script type="text/javascript" src="/static/js/jquery-1.3.2.min.js"></script>
<script type="text/javascript">
var cookieName = 'city';
var cookieValue = 'city';
var myDate = new Date();
myDate.setMonth(myDate.getMonth() + 12);
document.cookie = cookieName +"=" + cookieValue + `";domain=.example.com;path=/;expires=" + myDate;
</script>
<script type="text/javascript">
//<![CDATA[
$(function(){
var city = getCookie('city');
if(city !=null && city !=''){
window.location.href = 'http://' + city + '.example.com';
}
$('#citygo').change(function(){
var city = $(this).val();
window.location.href = 'http://' + city + '.example.com';
});
});
function setCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else var expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}
function getCookie(name) {
var nameEQ = name + "=";
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(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
function dropCookie(name) {
createCookie(name,"",-1);
}
//]]>
</script>
回答by Joe Love
By default, cookies are set to only send on the same domain name that they came from. Be sure you set the cookie domain to .example.com to share across all subdomains (assuming that you indeed are trying to share across subdomains). /
默认情况下，cookies 被设置为只在它们来自的相同域名上发送。确保将 cookie 域设置为 .example.com 以在所有子域之间共享（假设您确实尝试跨子域共享）。/
$.cookie('city', 'whatevercityhere', { expires: 7, path: '/', domain: '.example.com' });
Edit: Per comments below, also check that the cookie isn't set to http-only.
编辑：根据下面的评论，还要检查 cookie 是否未设置为 http-only。
回答by Mr.G
Try this example:
试试这个例子：
<script type="text/javascript">
var cookieName = 'HelloWorld';
var cookieValue = 'HelloWorld';
var myDate = new Date();
myDate.setMonth(myDate.getMonth() + 12);
document.cookie = cookieName +"=" + cookieValue + ";expires=" + myDate
+ ";domain=.example.com;path=/";
</script>
