jquery.cookie.js——jquery的cookie插件

　　一、JS文件

/*!
* jQuery Cookie Plugin v1.4.1
* https://github.com/carhartl/jquery-cookie *
* Copyright 2006, 2014 Klaus Hartl
* Released under the MIT license
*/
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD (Register as an anonymous module)
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// Node/CommonJS
module.exports = factory(require('jquery'));
} else {
// Browser globals
factory(jQuery);
}
}(function ($) {

var pluses = /\+/g;

function encode(s) {
return config.raw ? s : encodeURIComponent(s);
}

function decode(s) {
return config.raw ? s : decodeURIComponent(s);
}

function stringifyCookieValue(value) {
return encode(config.json ? JSON.stringify(value) : String(value));
}

function parseCookieValue(s) {
if (s.indexOf('"') === 0) {
// This is a quoted cookie as according to RFC2068, unescape...
s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
}

try {
// Replace server-side written pluses with spaces.
// If we can't decode the cookie, ignore it, it's unusable.
// If we can't parse the cookie, ignore it, it's unusable.
s = decodeURIComponent(s.replace(pluses, ' '));
return config.json ? JSON.parse(s) : s;
} catch(e) {}
}

function read(s, converter) {
var value = config.raw ? s : parseCookieValue(s);
return $.isFunction(converter) ? converter(value) : value;
}

var config = $.cookie = function (key, value, options) {

// Write

if (arguments.length > 1 && !$.isFunction(value)) {
options = $.extend({}, config.defaults, options);

if (typeof options.expires === 'number') {
var days = options.expires, t = options.expires = new Date();
t.setMilliseconds(t.getMilliseconds() + days * 864e+5);
}

return (document.cookie = [
encode(key), '=', stringifyCookieValue(value),
options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
options.path    ? '; path=' + options.path : '',
options.domain  ? '; domain=' + options.domain : '',
options.secure  ? '; secure' : ''
].join(''));
}

// Read

d956
var result = key ? undefined : {},
// To prevent the for loop in the first place assign an empty array
// in case there are no cookies at all. Also prevents odd result when
// calling $.cookie().
cookies = document.cookie ? document.cookie.split('; ') : [],
i = 0,
l = cookies.length;

for (; i < l; i++) {
var parts = cookies[i].split('='),
name = decode(parts.shift()),
cookie = parts.join('=');

if (key === name) {
// If second argument (value) is a function it's a converter...
result = read(cookie, value);
break;
}

// Prevent storing a cookie that we couldn't decode.
if (!key && (cookie = read(cookie)) !== undefined) {
result[name] = cookie;
}
}

return result;
};

config.defaults = {};

$.removeCookie = function (key, options) {
// Must not alter options, thus extending a fresh object...
$.cookie(key, '', $.extend({}, options, { expires: -1 }));
return !$.cookie(key);
};

}));

 二、使用说明1、在页面引入JS文件

<script src="jquery.cookie.js"></script>
<script src="jquery-1.11.1.min.js"></script>

2、写入cookie写法：$.cookie("写入的cookie名","写入的cookie值",{expires:7,path:"/",domain:"地址",secure:true});参数含义：expires：含义：有效期单位：天可写值：数字，写入的数字为此cookie的有效时间日期对象：直接写一个日期对象作为cookie的过期时间默认：如果不写或写null则浏览器关闭后cookie删除path：路径，默认是创建该cookie的页面路径domain：域名属性，默认是创建该cookie的页面域名secure：如果为true，那么此cookie的传输会要求一个安全协议，例如https3、读取cookie写法：$.cookie("读取的cookie名")4、删除cookie写法：$.cookie("删除的cookie名",null)参数null：代表删除此cookie