我创建cookie的功能正确吗?如何删除程序开头的cookie ?有简单的编码吗?
function createCookie(name,value,days)
function setCookie(c_name,value,1) {
document.cookie = c_name + "=" +escape(value);
}
setCookie('cookie_name',mac);
function eraseCookie(c_name) {
createCookie(cookie_name,"",-1);
}
当前回答
这里有一个关于quirkmode的链接。
function setCookie(name,value,days) {
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days*24*60*60*1000));
expires = "; expires=" + date.toUTCString();
}
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 eraseCookie(name) {
document.cookie = name+'=; Max-Age=-99999999;';
}
其他回答
我在删除一个通过JavaScript制作的cookie时遇到了麻烦，在我添加了主机后它就工作了(滚动下面的代码到右边可以看到location.host)。清除域上的cookie后，尝试以下操作查看结果:
if (document.cookie.length==0)
{
document.cookie = 'name=example; expires='+new Date((new Date()).valueOf()+1000*60*60*24*15)+'; path=/; domain='+location.host;
if (document.cookie.length==0) {alert('Cookies disabled');}
else
{
document.cookie = 'name=example; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/; domain='+location.host;
if (document.cookie.length==0) {alert('Created AND deleted cookie successfully.');}
else {alert('document.cookies.length = '+document.cookies.length);}
}
}
如果手动创建cookie，其他一些解决方案可能无法工作。
下面是一个快速删除cookie的方法:
document.cookie = 'COOKIE_NAME=; Max-Age=0; path=/; domain=' + location.host;
如果这不起作用，试着替换位置。带有位置的主机。上面代码片段中的主机名。
以下是Mozilla支持unicode的删除cookie函数的实现:
function removeItem(sKey, sPath, sDomain) {
document.cookie = encodeURIComponent(sKey) +
"=; expires=Thu, 01 Jan 1970 00:00:00 GMT" +
(sDomain ? "; domain=" + sDomain : "") +
(sPath ? "; path=" + sPath : "");
}
removeItem("cookieName");
如果你使用AngularJs，试试$cookies。删除(下面使用类似的方法):
$cookies.remove('cookieName');
要删除一个cookie，我再次设置一个空值，并在1秒内到期。 在细节上，我总是使用以下口味中的一种(我更喜欢第二种):
1.
function setCookie(key, value, expireDays, expireHours, expireMinutes, expireSeconds) {
var expireDate = new Date();
if (expireDays) {
expireDate.setDate(expireDate.getDate() + expireDays);
}
if (expireHours) {
expireDate.setHours(expireDate.getHours() + expireHours);
}
if (expireMinutes) {
expireDate.setMinutes(expireDate.getMinutes() + expireMinutes);
}
if (expireSeconds) {
expireDate.setSeconds(expireDate.getSeconds() + expireSeconds);
}
document.cookie = key +"="+ escape(value) +
";domain="+ window.location.hostname +
";path=/"+
";expires="+expireDate.toUTCString();
}
function deleteCookie(name) {
setCookie(name, "", null , null , null, 1);
}
用法:
setCookie("reminder", "buyCoffee", null, null, 20);
deleteCookie("reminder");
2
function setCookie(params) {
var name = params.name,
value = params.value,
expireDays = params.days,
expireHours = params.hours,
expireMinutes = params.minutes,
expireSeconds = params.seconds;
var expireDate = new Date();
if (expireDays) {
expireDate.setDate(expireDate.getDate() + expireDays);
}
if (expireHours) {
expireDate.setHours(expireDate.getHours() + expireHours);
}
if (expireMinutes) {
expireDate.setMinutes(expireDate.getMinutes() + expireMinutes);
}
if (expireSeconds) {
expireDate.setSeconds(expireDate.getSeconds() + expireSeconds);
}
document.cookie = name +"="+ escape(value) +
";domain="+ window.location.hostname +
";path=/"+
";expires="+expireDate.toUTCString();
}
function deleteCookie(name) {
setCookie({name: name, value: "", seconds: 1});
}
用法:
setCookie({name: "reminder", value: "buyCoffee", minutes: 20});
deleteCookie("reminder");
这里有一个关于quirkmode的链接。
function setCookie(name,value,days) {
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days*24*60*60*1000));
expires = "; expires=" + date.toUTCString();
}
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 eraseCookie(name) {
document.cookie = name+'=; Max-Age=-99999999;';
}
