jquery.cookie.js
上传用户:jhh8446530
上传日期:2016-01-28
资源大小:116k
文件大小:4k
- /**
- * 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 < cookies.length; 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;
- }
- return null;
- };