javascript cookie 简单的使用

创建Cookie 

	document.cookie = 'key=value';

 

 　　有特殊字符 使用encodeURIComponent() 进行编码

	document.cookie = 'user='+encodeURIComponent('郭钱;'); 

 　　读取时 使用decodeURIComponent()

　　例如：

　　

    document.cookie = 'name=guoqian';
    document.cookie = 'age=24';
    document.cookie = 'address=hunan';
    document.cookie = 'user='+encodeURIComponent('郭钱;'); 

 　　自定义一个创建cookie方法

            function SetCookie(name, value, expires, path, domain, secure) {
                var today = new Date();
                today.setTime(today.getTime());
                if(expires) { expires *= 86400000; }
                var expires_date = new Date(today.getTime() + (expires));
                document.cookie = name + "=" + escape(value)
                    + (expires ? ";expires=" + expires_date.toGMTString() : "")
                    + (path ? ";path=" + path : "")
                    + (domain ? ";domain=" + domain : "")
                    + (secure ? ";secure" : "");
            }

获取cookie

　　使用字符串方式

            function getCookieByString(cookieName){
                var start = document.cookie.indexOf(cookieName+'=');
                if (start == -1) return false;
                start = start+cookieName.length+1;
                var end = document.cookie.indexOf(';', start);
                if (end == -1) end=document.cookie.length;
                return document.cookie.substring(start, end);
            }

 

 使用数组方式

            function getCookieByArray(name){
                var cookies = document.cookie.split(';');
                var c;
                for(var i=0; i<cookies.length ; i++){
                    c = cookies[i].split('=');
                    if (c[0].replace(' ', '') == name) {
                        return c[1];
                    }
                }
            }
            var r = decodeURIComponent(getCookieByArray('user'));
            alert(r);