1。保存cookies的文件：
1 /** 2 * Cookie plugin 3 * 4 * Copyright (c) 2006 Klaus Hartl (stilbuero.de) 5 * Dual licensed under the MIT and GPL licenses: 6 * http://www.opensource.org/licenses/mit-license.php 7 * http://www.gnu.org/licenses/gpl.html 8 * 9 */ 10 11 /** 12 * Create a cookie with the given name and value and other optional parameters. 13 * 14 * @example $.cookie('the_cookie', 'the_value'); 15 * @desc Set the value of a cookie. 16 * @example $.cookie('the_cookie', 'the_value', {expires: 7, path: '/', domain: 'jquery.com', secure: true}); 17 * @desc Create a cookie with all available options. 18 * @example $.cookie('the_cookie', 'the_value'); 19 * @desc Create a session cookie. 20 * @example $.cookie('the_cookie', null); 21 * @desc Delete a cookie by passing null as value. 22 * 23 * @param String name The name of the cookie. 24 * @param String value The value of the cookie. 25 * @param Object options An object literal containing key/value pairs to provide optional cookie attributes. 26 * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object. 27 * If a negative value is specified (e.g. a date in the past), the cookie will be deleted. 28 * If set to null or omitted, the cookie will be a session cookie and will not be retained 29 * when the the browser exits. 30 * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie). 31 * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie). 32 * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will 33 * require a secure protocol (like HTTPS). 34 * @type undefined 35 * 36 * @name $.cookie 37 * @cat Plugins/Cookie 38 * @author Klaus Hartl/klaus.hartl@stilbuero.de 39 */ 40 41 /** 42 * Get the value of a cookie with the given name. 43 * 44 * @example $.cookie('the_cookie'); 45 * @desc Get the value of a cookie. 46 * 47 * @param String name The name of the cookie. 48 * @return The value of the cookie. 49 * @type String 50 * 51 * @name $.cookie 52 * @cat Plugins/Cookie 53 * @author Klaus Hartl/klaus.hartl@stilbuero.de 54 */ 55 jQuery.cookie = function(name, value, options) { 56 if (typeof value != 'undefined') { // name and value given, set cookie 57 options = options || {}; 58 if (value === null) { 59 value = ''; 60 options.expires = -1; 61 } 62 var expires = ''; 63 if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) { 64 var date; 65 if (typeof options.expires == 'number') { 66 date = new Date(); 67 date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000)); 68 } else { 69 date = options.expires; 70 } 71 expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE 72 } 73 var path = options.path ? '; path=' + options.path : ''; 74 var domain = options.domain ? '; domain=' + options.domain : ''; 75 var secure = options.secure ? '; secure' : ''; 76 document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join(''); 77 } else { // only name given, get cookie 78 var cookieValue = null; 79 if (document.cookie && document.cookie != '') { 80 var cookies = document.cookie.split(';'); 81 for (var i = 0; i < cookies.length; i++) { 82 var cookie = jQuery.trim(cookies[i]); 83 // Does this cookie string begin with the name we want? 84 if (cookie.substring(0, name.length + 1) == (name + '=')) { 85 cookieValue = decodeURIComponent(cookie.substring(name.length + 1)); 86 break; 87 } 88 } 89 } 90 return cookieValue; 91 } 92 };
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