jquery cookie的用法

柔情只为你懂 2021-11-01 14:31 350阅读 0赞

jQuery cookie是个很好的cookie插件，大概的使用方法如下  
example $.cookie(’name’, ‘value’);  
设置cookie的值，把name变量的值设为value  
example $.cookie(’name’, ‘value’, \{expires: 7, path: ‘/’, domain: ‘jquery.com’, secure: true\});  
新建一个cookie 包括有效期 路径 域名等  
example $.cookie(’name’, ‘value’);  
新建cookie  
example $.cookie(’name’, null);  
删除一个cookie

var account= $.cookie('name');  
取一个cookie(name)值给myvar

代码如下

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;  
\}  
\};

然后看了下Discuz!中对cookie的操作方法  
如下,发现少了个遍历用;分割的数组的处理

function getcookie(name) \{  
var cookie\_start = document.cookie.indexOf(name);  
var cookie\_end = document.cookie.indexOf(";", cookie\_start);  
return cookie\_start == -1 ? '' : unescape(document.cookie.substring(cookie\_start + name.length + 1, (cookie\_end > cookie\_start ? cookie\_end : document.cookie.length)));  
\}

function setcookie(cookieName, cookieValue, seconds, path, domain, secure) \{  
var expires = new Date();  
expires.setTime(expires.getTime() + seconds);  
document.cookie = escape(cookieName) + '=' + escape(cookieValue)  
\+ (expires ? '; expires=' + expires.toGMTString() : '')  
\+ (path ? '; path=' + path : '/')  
\+ (domain ? '; domain=' + domain : '')  
\+ (secure ? '; secure' : '');  
\}

转载于:https://www.cnblogs.com/opaljc/archive/2012/03/11/2390785.html