js删除cookie,JS删除对象
如何用js向cookie中保存数据，取数据。
可以使用jquery.cookie.js扩展包，先到网络上下载好
使用方法：
前后html省略
script src="/js/jquery.cookie.js"/script
script
//设置cookie
//test为键名，1为键值，第三个参数是失效时间
$.cookie("test", "1", { expires: 7 }); // 存储一个带7天期限的 cookie
//读取cookie
$.cookie("test");
//删除cookie
$.cookie("test", "1", { expires: -1 }); //设置过期时间为负就失效了
/script
js怎样修改cookie的domain
要想删除一个cookie，需要使用相同的名字，路径和域随便指定一个值，然后将max-age设置为0，马上过期
document.cookie="example=1;?max-age=0;?domain=;path=/"
这样就删除了这个cookie，要想改变cookie，也是一样的，必须保证路径和域相同，改变对应的name的值就行
现在再去使用新的cookie
document.cookie?=?"example=2;?expires=Mon,?11?Nov?2026?07:34:46?GMT;?domain=test.com;path=/"
asp.net如何在标签里加js验证清空指定cookie?
1）a href='ActiveList.aspx?ChannelId=91str=88-4' target='fmain' onclick='ClearCookie();'活动管理/a2）JS中这样写：script src=" "/script//注意：Cookie.js是另外一个js文件，代码如下： /**
* Cookie plugin
*
* Copyright (c) 2006 Klaus Hartl (stilbuero.de)
* Dual licensed under the MIT and GPL licenses:
*
*
*
*//**
* Create a cookie with the given name and value and other optional parameters.
*
* @example $.cookie('the_cookie', 'the_value');
* @desc Set the value of a cookie.
* @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
* @desc Create a cookie with all available options.
* @example $.cookie('the_cookie', 'the_value');
* @desc Create a session cookie.
* @example $.cookie('the_cookie', null);
* @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
* used when the cookie was set.
*
* @param String name The name of the cookie.
* @param String value The value of the cookie.
* @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
* @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
* If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
* If set to null or omitted, the cookie will be a session cookie and will not be retained
* when the the browser exits.
* @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
* @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
* @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
* require a secure protocol (like HTTPS).
* @type undefined
*
* @name $.cookie
* @cat Plugins/Cookie
* @author Klaus Hartl/klaus.hartl@stilbuero.de
*//**
* Get the value of a cookie with the given name.
*
* @example $.cookie('the_cookie');
* @desc Get the value of a cookie.
*
* @param String name The name of the cookie.
* @return The value of the cookie.
* @type String
*
* @name $.cookie
* @cat Plugins/Cookie
* @author Klaus Hartl/klaus.hartl@stilbuero.de
*/
jQuery.cookie = function (name, value, options) {
if (typeof value != 'undefined') { // name and value given, set cookie
options = options || {};
if (value === null) {
value = '';
options.expires = -1;
}
var expires = '';
if (options.expires (typeof options.expires == 'number' || options.expires.toUTCString)) {
var date;
if (typeof options.expires == 'number') {
date = new Date();
date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
} else {
date = options.expires;
}
expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
}
// CAUTION: Needed to parenthesize options.path and options.domain
// in the following expressions, otherwise they evaluate to undefined
// in the packed version for some reason...
var path = options.path ? '; path=' + (options.path) : '';
var domain = options.domain ? '; domain=' + (options.domain) : '';
var secure = options.secure ? '; secure' : '';
document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
} else { // only name given, get cookie
var cookieValue = null;
if (document.cookie document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
};
script src="Cookie.js" type="text/javascript"/scriptscript //COOKIE_NAME——你的Cookie的名字 function ClearCookie() {$.cookie('COOKIE_NAME', null); $.cookie('COOKIE_NAME', null, { path: '/' }); }/scirpt
JS 怎么保存Cookie~~
js保存COOKIE，直接给document加上cookie就可以了，但是一般如果单个的加会很麻烦所以一般会直接写好一个函数，可以直接操作cookie，这样就很方便了
setCookie这个是写入cookie，第一个是名称，第二个是cookie值，第三个是过期时间
getCookie这个是查找cookie;
removeCookie这是你需要删除的cookie;
function?setCookie(name,?value,?iDay)?
{
var?oDate=new?Date();
oDate.setDate(oDate.getDate()+iDay);
document.cookie=name+'='+encodeURIComponent(value)+';expires='+oDate;
}
function?getCookie(name)
{
var?arr=document.cookie.split(';?');
var?i=0;
for(i=0;iarr.length;i++)
{
//arr2-['username',?'abc']
var?arr2=arr[i].split('=');
if(arr2[0]==name)
{
var?getC?=?decodeURIComponent(arr2[1]);
return?getC;
}
}
return?'';
}
function?removeCookie(name)
{
setCookie(name,?'1',?-1);
}
