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