jQuery的cookie插件使用，jQuery操作cookie，写入，读取，删除

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我是靠谱客的博主如意猎豹，最近开发中收集的这篇文章主要介绍jQuery的cookie插件使用，jQuery操作cookie，写入，读取，删除，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

写入Cookie

$.cookie("cookie_name","value");

cookie_name是待写入的Cookie的名，value是写入当前Cookie的值。

读取Cookie

$.cookie('cookie_name');

删除Cookie

$.cookie("cookie_name",null);

把对应Cookie的值设置为null就是删除了当前Cookie。注：要与之前设置的path和domain相同，只有路径和域名和之前保持一致才能正确删除。

其他参数

$.cookie('cookie_name','value',{
     expires:7,
     path:'/',
     domain:'csdn.com',
     secure:true
});

expires(number|date)：有效期，单位：天。也可以设置一个日期作为过期日期。如果指定日期为负数，cookie将被删除。如果不设置或设置为null，那么cookie将会被当作session cookie处理，并且在浏览器关闭后删除。

path：cookie的设置路径

domain：域名

secure：如果是true，那么此Cookie的传输会要求一个安全协议，类似https之类的协议。

jQuery.cookie.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);
	};

}));