jquery操作cookie

cookie操作大概有：得到cookie，添加cookie和删除某个cookie是否存。网上有类似的资源，下面贴一个可用的（将函数放到jquery的命名空间里，这样就可以通过$.cookie()调用了）。

jQuery.cookie = function(name, value, options) {
if (typeof value != 'undefined') {
options = options || {};
if (value === null) {
value = '';
options = $.extend({}, options);
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;
}
};

对于一般常见的操作，上面的方法已经足够了。如果cookie值是一个数组，还得将上面的方法再封装。

var cookieUtil = {
addCookie : function (key,value) {
if ($.trim(key).length == 0 || $.trim(value).length == 0) {
return;
}

var cookies = cookieUtil.getCookie(key);

if ($.inArray(value,cookies) != -1) {
return;
}

cookies.push(value);

var expiresTime = new Date();
expiresTime.setTime(expiresTime.getTime() + 60*60*24*30*1000);
$.cookie(key,cookies,{expires : expiresTime,path : '/'});
},

getCookie : function (key) {

var cookies = new Array();

var cookieStr = $.cookie(key);
if (cookieStr != null) {
cookies = cookieStr.split(',');
}

return cookies;
},

deleteCookie : function (key,value) {
if ($.trim(key).length == 0 || $.trim(value).length == 0) {
return;
}

var cookies = cookieUtil.getCookie(key);

if ($.inArray(value,cookies) == -1) {
return;
}

$.cookie(key,null);
$.each(cookies,function (n,val) {
if (val != value) {
cookieUtil.addCookie(key,val);
}
});
}
};