Cookies.js
资源名称:ext-3.1.0.zip [点击查看]
上传用户:dawnssy
上传日期:2022-08-06
资源大小:9345k
文件大小:4k
源码类别:
JavaScript
开发平台:
JavaScript
- /*! * Ext JS Library 3.1.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.util.Cookies
- * Utility class for managing and interacting with cookies.
- * @singleton
- */
- Ext.util.Cookies = {
- /**
- * Create a cookie with the specified name and value. Additional settings
- * for the cookie may be optionally specified (for example: expiration,
- * access restriction, SSL).
- * @param {String} name The name of the cookie to set.
- * @param {Mixed} value The value to set for the cookie.
- * @param {Object} expires (Optional) Specify an expiration date the
- * cookie is to persist until. Note that the specified Date object will
- * be converted to Greenwich Mean Time (GMT).
- * @param {String} path (Optional) Setting a path on the cookie restricts
- * access to pages that match that path. Defaults to all pages (<tt>'/'</tt>).
- * @param {String} domain (Optional) Setting a domain restricts access to
- * pages on a given domain (typically used to allow cookie access across
- * subdomains). For example, "extjs.com" will create a cookie that can be
- * accessed from any subdomain of extjs.com, including www.extjs.com,
- * support.extjs.com, etc.
- * @param {Boolean} secure (Optional) Specify true to indicate that the cookie
- * should only be accessible via SSL on a page using the HTTPS protocol.
- * Defaults to <tt>false</tt>. Note that this will only work if the page
- * calling this code uses the HTTPS protocol, otherwise the cookie will be
- * created with default options.
- */
- set : function(name, value){
- var argv = arguments;
- var argc = arguments.length;
- var expires = (argc > 2) ? argv[2] : null;
- var path = (argc > 3) ? argv[3] : '/';
- var domain = (argc > 4) ? argv[4] : null;
- var secure = (argc > 5) ? argv[5] : false;
- document.cookie = name + "=" + escape(value) + ((expires === null) ? "" : ("; expires=" + expires.toGMTString())) + ((path === null) ? "" : ("; path=" + path)) + ((domain === null) ? "" : ("; domain=" + domain)) + ((secure === true) ? "; secure" : "");
- },
- /**
- * Retrieves cookies that are accessible by the current page. If a cookie
- * does not exist, <code>get()</code> returns <tt>null</tt>. The following
- * example retrieves the cookie called "valid" and stores the String value
- * in the variable <tt>validStatus</tt>.
- * <pre><code>
- * var validStatus = Ext.util.Cookies.get("valid");
- * </code></pre>
- * @param {String} name The name of the cookie to get
- * @return {Mixed} Returns the cookie value for the specified name;
- * null if the cookie name does not exist.
- */
- get : function(name){
- var arg = name + "=";
- var alen = arg.length;
- var clen = document.cookie.length;
- var i = 0;
- var j = 0;
- while(i < clen){
- j = i + alen;
- if(document.cookie.substring(i, j) == arg){
- return Ext.util.Cookies.getCookieVal(j);
- }
- i = document.cookie.indexOf(" ", i) + 1;
- if(i === 0){
- break;
- }
- }
- return null;
- },
- /**
- * Removes a cookie with the provided name from the browser
- * if found by setting its expiration date to sometime in the past.
- * @param {String} name The name of the cookie to remove
- */
- clear : function(name){
- if(Ext.util.Cookies.get(name)){
- document.cookie = name + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
- }
- },
- /**
- * @private
- */
- getCookieVal : function(offset){
- var endstr = document.cookie.indexOf(";", offset);
- if(endstr == -1){
- endstr = document.cookie.length;
- }
- return unescape(document.cookie.substring(offset, endstr));
- }
- };