jquery操作cookie

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/**

* Cookie plugin

*

* Copyright (c) 2006 Klaus Hartl (stilbuero.de)

* Dual licensed under the MIT and GPL licenses:

* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*

*/

/**

* 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.

*

* @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

}

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;

}

};

提供方便方法操作cookie :

$.cookie('the_cookie'); // 获得cookie

$.cookie('the_cookie', 'the_value'); // 设置cookie

$.cookie('the_cookie', 'the_value', { expires: 7 }); //设置带时间的cookie 7天

$.cookie('the_cookie', '', { expires: -1 }); // 删除

$.cookie('the_cookie', null); // 删除 cookie

设置cookie的名值对，有效期，路径，域，安全

$.cookie(’name’, ‘value’, {expires: 7, path: ‘/’, domain: ‘jquery.com’, secure: true});

如果在action中出现乱码，需URLDecoder.decode(cookievalue,"utf-8")