lovecoding
/
W250913


			
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // var now = new Date();
        // var nowDate = now.getDate();
        // // setDate设置日期
        // now.setDate(nowDate + 1);
        // var dateStr = now.toUTCString();
        // console.log(dateStr);

        // document.cookie = "username=张三;Expires="+dateStr;
        // document.cookie = "userage=18;Expires="+dateStr;

        // document.cookie 存储cookie 等于一个键值对的方式 Expires后边是一个时间对象的字符串 表示的是这个cookie的过期时间
        // 当前cookie仅在当前域名生效 比如 www.baidu.com 和 www.taobao.com 下的cookie都是独立空间存储 互相不互通


        // cookie 读取 也是通过document.cookie
        // var thisCookie = document.cookie;
        // console.log(thisCookie);

        var now = new Date();
        var nowDate = now.getDate();
        now.setDate(nowDate - 1);

        document.cookie = "userage=19;Expires="+ now.toUTCString();
        

        // 储存cookie
        setCookie(key,val,timer);
        // 获取cookie
        getCookie(key);
        // 删除cookie
        delCookie(key);
    </script>
</body>
</html>