jQuery插件:操作cookie

/*使用方法：$(function() {    var COOKIE_NAME = 'test_cookie';    //设置cookie，通过时间间隔     $('a').eq(0).click(function() {        $.cookie(COOKIE_NAME, 'test', { path: '/', expires: 1 });        return false;    });    // 设置cookie，到期时间     $('a').eq(1).click(function() {        var date = new Date();        date.setTime(date.getTime() + (1 * 24 * 60 * 60 * 1000));        $.cookie(COOKIE_NAME, 'test', { path: '/', expires: date });        return false;    });    // 获取 cookie     $('a').eq(2).click(function() {        alert($.cookie(COOKIE_NAME));        return false;    });    // 删除cookie     $('a').eq(3).click(function() {        $.cookie(COOKIE_NAME, null, { path: '/' });        return false;    });});*/function cookadd(name,value) {    $.cookie(name, value, { path: '/', expires: 1 });}function cookdel(name) {    $.cookie(name, null, { path: '/' });}function cookie(name) {    return $.cookie(name);} = 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();        }        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 {        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]);                if (cookie.substring(0, name.length + 1) == (name + '=')) {                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));                    break;                }            }        }        return cookieValue;    }};