localStorage对象简单应用

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>

    /*if(a==0){localStorage.setItem("key","0");}//以“key”为名称存储一个值“value”
    a = localStorage.getItem("key");*/
    //获取名称为“key”的值

    // localStorage.removeItem("key");//删除名称为“key”的信息。

    // localStorage.clear();//清空localStorage中所有信息

    if(!localStorage.getItem("key")){
        a = 0;
        localStorage.setItem("key","0");
    }else{
        a = localStorage.getItem("key");
        localStorage.setItem("key",++a);
    }

    document.write(a);
    // localStorage.clear();
    /*上面这是一种方法*/

    /*下面也是一种方法，pagecount是localStorage的一个自带属性*/
    if (localStorage.pagecount)
    {
        localStorage.pagecount=Number(localStorage.pagecount) +1;
    }
    else
    {
        localStorage.pagecount=1;
    }
    document.write("Visits "+ localStorage.pagecount + " time(s).");
</script>

</body>
</html>