add com..

component/js/cookie.js

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+/*
+ * HTTP Cookie:存储会话信息
+ * 名称和值传送时必须是经过RUL编码的
+ * cookie绑定在指定的域名下，非本域无法共享cookie，但是可以是在主站共享cookie给子站
+ * cookie有一些限制：比如IE6 & IE6- 限定在20个；IE7 50个；Opear 30个...所以一般会根据【必须】需求才设定cookie
+ * cookie的名称不分大小写；同时建议将cookie URL编码；路径是区分cookie在不同情况下传递的好方式；带安全标志cookie
+ *     在SSL情况下发送到服务器端，http则不会。建议针对cookie设置expires、domain、 path；每个cookie小于4KB
+ * */
+//对cookie的封装，采取getter、setter方式
+'use strict';
+(function(global){
+	//获取cookie对象，以对象表示
+	function getCookiesObj(){
+		var cookies = {};
+		if(document.cookie){
+			var objs = document.cookie.split('; ');
+			for(var i in objs){
+				var index = objs[i].indexOf('='),
+					name = objs[i].substr(0, index),
+					value = objs[i].substr(index + 1, objs[i].length);	
+				cookies[name] = value;
+			}
+		}
+		return cookies;
+	}
+	//设置cookie
+	function set(name, value, opts){
+		//opts maxAge, path, domain, secure
+		if(name && value){
+			var cookie = encodeURIComponent(name) + '=' + encodeURIComponent(value);
+			//可选参数
+			if(opts){
+				if(opts.maxAge){
+					cookie += '; max-age=' + opts.maxAge; 
+				}
+				if(opts.path){
+					cookie += '; path=' + opts.path;
+				}
+				if(opts.domain){
+					cookie += '; domain=' + opts.domain;
+				}
+				if(opts.secure){
+					cookie += '; secure';
+				}
+			}
+			document.cookie = cookie;
+			return cookie;
+		}else{
+			return '';
+		}
+	}
+	//获取cookie
+	function get(name){
+		return decodeURIComponent(getCookiesObj()[name]) || null;
+	}
+	
+	//清除某个cookie
+	function remove(name){
+		if(getCookiesObj()[name]){
+			document.cookie = name + '=; max-age=0';
+		}
+	}
+	
+	//清除所有cookie
+	function clear(){
+		var cookies = getCookiesObj();
+		for(var key in cookies){
+			document.cookie = key + '=; max-age=0';
+		}
+	}
+	//获取所有cookies
+	function getCookies(name){
+		return getCookiesObj();
+	}
+	//解决冲突
+	function noConflict(name){
+		if(name && typeof name === 'string'){
+			if(name && window['cookie']){
+				window[name] = window['cookie'];
+				delete window['cookie'];
+				return window[name];
+			}
+		}else{
+			return window['cookie'];
+			delete window['cookie'];
+		}
+	}
+	global['cookie'] = {
+		'getCookies': getCookies,
+		'set': set,
+		'get': get,
+		'remove': remove,
+		'clear': clear,
+		'noConflict': noConflict
+	};
+})(window);