jquery cookie插件代码类

提供方便方法操作cookie :
复制代码代码如下:
$.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
$.cookie（"the_cookie", "the_value", { expires: 7, path: "/", domain: "sosuo8.com", secure: true }）;
$.cookie（"the_cookie", "", { expires: -1 }）; // 删除
$.cookie（"the_cookie", null）; // 删除 cookie

代码：
复制代码代码如下:
/**
* 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. 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;
}
};