JavaScript LocalStorage时效是否过期判断 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>localStorage.</title>
    <script type="text/javascript">
        // 关于localStorage过期时间设置
        var obj = new Object();
        obj.a = a;
        obj.time = 3600;
        obj.date = new Date().getTime();
        // 储存到localStorage.
        localStorage.setItem('data', JSON.stringify(obj));
        // 取值
        var b = JSON.parse(localStorage.getItem('data'));
        var tiem = b.time;
        var data = b.date;
        if ((parseInt(time) + parseInt(data)) < new Date().getTime()) {
            // 如果小于说明数据时效已经过了,可以清除了....
            localStorage.remove('data');
        } else {
            // 如果大于说明数据还有效
            console.log(b.a);
        }
    </script>
</head>
<body>

</body>
</html>

　　

posted @ 2018-04-27 16:26  MiraclesGG  阅读(1659)  评论(0)    收藏  举报