おもちゃjavascript:cookie管理

;(function(window, undefined){

	var CookieUtil = window.CookieUtil = window.CookieUtil || {};
	var doc = window.document;

	//      name Cookie  
	CookieUtil.read = function(name){

		//   Cookie
		if(doc.cookie.length <= 0){
			return null;
		}

		//     cookie  
		var cookies = doc.cookie.split(';');
		var size = cookies.length, i, c;

		//         cookie  
		for(i = 0; i < size; i++){
			c = cookies[i].split('=');

			//   cookie，  trim，   cookie       
			if($.trim(c[0]) == name){
				return unescape(c[1]);
			}
		}

		return null;
	};

	//      name，  value Cookie  ，     timeout 
	CookieUtil.write = function(name, value, timeout){
		var flg = timeout === undefined;
		var exp = flg ? 0 : timeout;

		//       
		var expires = new Date();
		expires.setSeconds(expires.getSeconds() + exp);

		//   Cookie  
		doc.cookie = name + '=' + escape(value) + (flg ? '' : (';expires=' + expires.toGMTString()));
	};

	//      name Cookie  
	CookieUtil.remove = function(name){
		CookieUtil.write(name, null, -1);
	};

})(window);