Cookies and jQuery 在jquery中使用cookies,你需要一个插件Cookie plugin.
Setting cookies 用Cookie plug-in设置cookies是很直观的: 复制代码 代码如下: $(document).ready(function(){
// Setting a kittens cookie, it will be lost on browser restart: $.cookie("kittens","Seven Kittens");
// Setting demoCookie (as seen in the demonstration): $.cookie("demoCookie",text,{expires: 7, path: '/', domain: 'demo.tutorialzine.com'});
// "text" is a variable holding the string to be saved });
Reading cookies 读取cookie甚至更简单,只需要调用$.cookie()方法,给它一个cookie-name就可以了,这个方法会返回cookie的值: 复制代码 代码如下: $(document).ready(function(){
// Getting the kittens cookie: var str = $.cookie("kittens");
// str now contains "Seven Kittens" });
Deleting cookies 删除cookie,只需要在次使得$.cookie()方法,把第二个参数设置为null就可以了。 复制代码 代码如下: $(document).ready(function(){
// Deleting the kittens cookie: var str = $.cookie("kittens",null);
// No more kittens });
完整例子: demo.php 复制代码 代码如下: // Always set cookies before any data or HTML are printed to the page $visited = (int)$_COOKIE['pageVisits'] + 1; setcookie( 'pageVisits', // Name of the cookie, required $visited, // The value of the cookie time()+7*24*60*60, // Expiration time, set for a week in the future '/', // Folder path, the cookie will be available for all scripts in every folder of the site 'demo.tutorialzine.com'); // Domain to which the cookie will be locked ?>
MicroTut: Getting And Setting Cookies With jQuery & PHP | Tutorialzine demo
MicroTut: Getting And Setting Cookies With jQuery & PHP
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jquery.cookie.js 复制代码 代码如下: /** * Cookie plugin * * Copyright (c) 2006 Klaus Hartl (stilbuero.de) * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php * http://www.gnu.org/licenses/gpl.html * */ /** * Create a cookie with the given name and value and other optional parameters. * * @example $.cookie('the_cookie', 'the_value'); * @desc Set the value of a cookie. * @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true }); * @desc Create a cookie with all available options. * @example $.cookie('the_cookie', 'the_value'); * @desc Create a session cookie. * @example $.cookie('the_cookie', null); * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain * used when the cookie was set. * * @param String name The name of the cookie. * @param String value The value of the cookie. * @param Object options An object literal containing key/value pairs to provide optional cookie attributes. * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object. * If a negative value is specified (e.g. a date in the past), the cookie will be deleted. * If set to null or omitted, the cookie will be a session cookie and will not be retained * when the the browser exits. * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie). * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie). * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will * require a secure protocol (like HTTPS). * @type undefined * * @name $.cookie * @cat Plugins/Cookie * @author Klaus Hartl/klaus.hartl@stilbuero.de */ /** * Get the value of a cookie with the given name. * * @example $.cookie('the_cookie'); * @desc Get the value of a cookie. * * @param String name The name of the cookie. * @return The value of the cookie. * @type String * * @name $.cookie * @cat Plugins/Cookie * @author Klaus Hartl/klaus.hartl@stilbuero.de */ 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 } // CAUTION: Needed to parenthesize options.path and options.domain // in the following expressions, otherwise they evaluate to undefined // in the packed version for some reason... 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 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; } };
styles.css 复制代码 代码如下: *{ margin:0; padding:0; } body{ /* Setting default text color, background and a font stack */ color:#555555; font-size:0.825em; background: #fcfcfc; font-family:Arial, Helvetica, sans-serif; } .section{ margin:0 auto 60px; text-align:center; width:600px; } .counter{ color:#79CEF1; font-size:180px; } .jq-text{ display:none; color:#79CEF1; font-size:80px; } p{ font-size:11px; padding:0 200px; } form{ margin-bottom:15px; } input[type=text]{ border:1px solid #BBBBBB; color:#444444; font-family:Arial,Verdana,Helvetica,sans-serif; font-size:14px; letter-spacing:1px; padding:2px 4px; } /* The styles below are only necessary for the styling of the demo page: */ h1{ background:#F4F4F4; border-bottom:1px solid #EEEEEE; font-size:20px; font-weight:normal; margin-bottom:15px; padding:15px; text-align:center; } h2 { font-size:12px; font-weight:normal; padding-right:40px; position:relative; right:0; text-align:right; text-transform:uppercase; top:-48px; } a, a:visited { color:#0196e3; text-decoration:none; outline:none; } a:hover{ text-decoration:underline; } .clear{ clear:both; } h1,h2,p.tutInfo{ font-family:"Myriad Pro",Arial,Helvetica,sans-serif; }
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